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Will Closing Vents in Unused Rooms Boost HVAC Efficiency?

It’s common to have some rooms in your home that always get too hot in the summer or too cold in the winter.  In an effort to force more air into the needed room(s), you close some vents in the little-used rooms. This may seem like a good idea, but you may be doing more harm than good when you seal up or block vents.

When you close a vent register, the system keeps cooling and pumping without delivering the cool air to a usable space. You’re basically paying to keep the inside of your ductwork cold!  In fact, this may lead to increased energy consumption due to increased duct leakage of conditioned air, and increased suction of unconditioned air from around doors and windows.  If the return air grate for your home is located in or near the closed off room, then you’ve really created a problem!  This can cause the compressor and condenser to cycle too frequently, and puts strain on the whole system, leading to accelerated wear and ultimately, an early failure. Plus, with the added pressure against the closed vent, it is apt to start “whistling” or making a rattling noise.  Why risk this damage when it doesn’t work and won’t even save energy?

Options

If you only want to keep a single room cooler or warmer, consider adding a ductless mini-split system, or adding an additional register or enlarging the existing registers in that room. Checkout our posts about uneven heating and cooling and our 3-part video series on zoning for other possible solutions.  But the best thing would be to have a skilled HVAC technician evaluate your problem, so you’ll have confidence that the solution they propose will work… instead of spending money on things that may not.

If you live in the Nashville area and want to make sure your air-conditioning or heating system is running at peak efficiency, call on Interstate AC Service, at (615) 832-8500.  We’re here for YOU!

Is Your Thermostat the Cause of Your Heating Problem?

It’s cold and your heat doesn’t seem to be working!  Did you know your thermostat could be the cause?  Here are some troubleshooting tips and fixes you may be able to do yourself, to save time and money.

  • Power:  Is the display on your thermostat blank? It could be there is no power to the thermostat.  A tripped circuit breaker or fuse could be the problem, possibly caused by a power outage, power surge, lightning strike, or storm. Reset the tripped circuit breaker or replace the fuse. Make sure all the wires going to the thermostat are connected and not loose.
  • Batteries: If your thermostat is battery-powered, or relies on battery for backup power in case of a power outage, it could be that the battery needs replacing.  If you have a programmable thermostat, and had a recent power outage, it could be that without a functioning battery backup, all of your settings have been wiped out by the power outage and the thermostat reverted to its default program. You’ll need to insert a new battery, then re-enter your settings.
  • Date/Time: Check that the thermostat is set to the correct day and time, including the AM or PM designation.  One customer bought a programmable thermostat to save money, with the intent to have the heat backed down while the customer was away at work, and have the heat cranked up at night when the customer was home.  But when the customer started freezing at night, they mistakenly thought something was wrong with their heat, when the real culprit was they had the AM/PM designation backwards on their thermostat!

Here’s a tip: If you’ve lost your owner’s manual for your thermostat, most major-brand manuals can be found on the web — just go to the manufacturer’s web site.

  • Mode: Check that the thermostat is in heat mode. This switch can easily get accidentally bumped into the off or cool position. If it’s a programmable thermostat, switch it to manual control and set it for 5 degrees above the room temperature, and wait to see if the heat cycles on.  If it does not, then the problem may be at the furnace.

If none of these DIY fixes addresses your problem, and you live in the Nashville area, give us a call at 615-802-2665. We’re here to help!

Single vs Variable-Speed Blowers: Does it Matter?

Single-Speed Blowers

If your furnace or heat pump is more than 10 years old, it likely has a single-speed air handler (blower).  Single-speed blowers work like a light switch: they’re either on (blowing at maximum speed) or off (not blowing).  Single-speed units have been the standard, most affordable option, but they have some disadvantages.

Disadvantages of Single-Speed Blowers

  • It uses more electricity.
  • It causes large swings in temperature: from too cold to too hot. And because the air does not circulate at all when the blower switches off, the heated air rises to the ceiling.  This is why we recommend running ceiling fans on low, even in the winter.
  • When the blower comes on, you hear a loud rush of air and it can be noisy.  Plus, the surge of electricity it consumes may cause your lights to dim for a second each time it kicks on.
  • Because there are periods when the blower is not blowing at all, humidity control suffers.  In the summer, the air only moves through the de-humidifier when the blower is on (actively blowing), and humidity builds up when the blower cycles off.
  • The constant cycling on and off makes for more wear-and-tear on all the components, and could cause the system to breakdown sooner.

Variable-Speed Blowers

Over the last 10 years, technology has continued to advance, making variable-speed motors less complex, more reliable, more responsive, and more commonplace on HVAC units.  A variable-speed blower runs at different speeds to precisely control the flow of heated or cooled air throughout your home.

On a mild day, the blower runs slower.  The AC or heat runs in longer cycles so the indoor temperature does not spike up and down, thus making overall efficiency higher.  Variable-speed blowers offer the highest efficiency and performance.  The AFUE (annual fuel utilization efficiency) of a furnace with a variable-speed blower may be as high as 95%.

Advantages of Variable-Speed Blowers

  • Sensitivity: Since it operates at different speeds, it can adapt to the unique airflow requirements of a home at any given point in time.  For example, it can compensate for the amount of dirt in the air filter or blocked vents by increasing the fan speed.
  • Efficiency: It always operates at the lowest speed required, thus it saves electricity, and is less costly to operate. This increases efficiency and allows the unit to use about two-thirds less electricity. This results in a 40% year-round energy savings (about 75% of that savings is in heating).
  • Quieter: Whether running AC or heat, the unit is quieter because most of the time it is not operating at full speed. Plus, it gradually ramps up to full-speed when needed, eliminating the sudden noisy blast of air common with single-speed units.
  • Comfort:  A variable-speed unit will keep you more comfortable because it keeps the temperatures more constant – eliminating the wide swings of too cold and too hot which results from single-speed systems cycling on and off.
  • Air Circulation:  It circulates air continuously, with fewer “off” cycles, allowing more air mixing and preventing the trapping of hot air near the ceiling.  In the summer, it allows the air-conditioner to remove more moisture from the air, decreasing humidity to make you feel more comfortable.
  • Air Quality: Because your air filter is only filtering particles when the air is moving through it, having a variable-speed blower means more air will be filtered.  This means leaving fewer particles to be deposited in your living space, which may translate into fewer allergens and less dust.
  • Longer Life: Since a variable-speed blower is not having to constantly cycle on and off, there is less wear-and-tear and thus fewer breakdowns and a longer operating life for the system.
  • Payback: Although the tax credits have expired for buying a high-efficiency variable speed HVAC unit, it is still a wise purchase.  This is because the reduced costs (less electricity consumed, fewer breakdowns) during operation mean you’ll get a return on investment (ROI) in just 4-5 years.

Does it Really Matter?

Bob, a homeowner who recently had a variable-speed HVAC system installed, says “There is a big difference… it does a better job of keeping warm and even throughout the room.”  His old system was quite noisy, so that has been a big improvement, too.  One feature Bob likes about his furnace now is that “it waits until the furnace is warm before it starts to blow hard.”

What System is Right for You?

If you live in the Nashville TN area and need help deciding between the various types of systems on the market and determining which one is best for your needs, give us a call at (615) 832-8500.

What it Takes to Replace your Home HVAC

This is a story of a homeowner whose heating and air conditioning reached the end of its life. For most systems, end-of-life can be anywhere from 12-16 years, but with some intermediate repairs, this system’s life was extended to 21 years.   In the fall of 2018, when the homeowners came home from a long trip, there was no air conditioning on the first floor of the house.  Interstate AC Service came out and added refrigerant to the system which appeared to solve the problem.  However, a week later, the refrigerant had leaked out and it became clear that something more would need to be done.  Interstate AC’s  system expert, Tommy Gentry,  discussed options with the homeowners.

The electric blower controls had been replaced two times in the last 10 years.  The existing HVAC unit was sitting on the basement floor, which made it subject to flooding.  So, the unit needed to be raised off the floor.  There were two rather small air ducts coming from the return and these needed to be enlarged.  Tommy took a lot of measurements and determined that a new 3-ton American Standard would fit the existing space and result in lower costs.  The existing heat pump was eliminated. Tommy drew up a reasonable estimate and the homeowner decided to proceed with the replacement.  Tommy provided drawings for the installers and made a list of parts that would be required. Three days later the truck arrived, and work with a two-man crew began.

  1. First, the gas was turned off, then the refrigerant was drained from the existing unit so it could be recycled.   Next, the exhaust was disconnected from the existing unit, and the old unit was removed and recycled.  Then, the area was made ready for the new furnace.
  2. A platform to go under the unit was put in place, then the blower, coils, and furnace were brought in and were put together.  Lines from the outside unit were brought inside and attached to the new unit.
  3. After a short break, Tommy brought in a load of parts, inspected the job, and helped to rebuild the new unit’s furnace exhaust.
  4. Next, they tackled the outdoor unit.  They cut the wiring and copper pipes to free the old unit so it could be removed and taken to the recycler.  The pad was prepared, and the new unit was unpacked and put into position.
  5. Wiring and copper pipes were now fitted to the new outdoor unit.  Air was evacuated from the pipes and the coils and the new unit was filled with the new, more eco-friendly, 410A refrigerant.
  6. The entire unit  – both heating and cooling – was tested.   Finally, the unit was buttoned up and connected to a new condensate pump.

The homeowner was impressed with the quality of the work and the care that Interstate AC Service took at each step of the way.  The new unit has a variable speed blower motor which makes a huge difference in reducing the noise coming from the unit.  We now have another very happy homeowner.

If you’re pondering a system replacement, let the folks at Interstate AC Service help!  If you live in the Nashville and surrounding area, give us a call at 615-802-2665.  We’re here for you!

Balancing Airflow for Uneven Temperatures – Alternatives to Zoning (Part 3)

This is part 3 of our 3-part series on alternatives to zoning. Zoning refers to creating separate thermostatically-controlled areas within your home.  But, before doing an expensive retro fit or buying a new multi-zoned system, try some of these things to address and possibly alleviate uneven temperatures in your home.  In this episode, we’ll focus on how Balancing Airflow and employing Spot Treatments may help.

Balancing the Airflow

Some rooms may be hard to heat and cool because of inadequate supply ducts or air register grills.  You may need to increase the size of the supply duct or add an additional duct to provide the needed airflow to the room. Any rooms with a lack of sufficient return airflow may benefit from relatively simple upgrades, such as: installing new or larger return-air registers, undercutting doors for increasing return air flow, or installing a jumper duct to create an air flow connection between rooms.  To see which of these solutions is best for your problem, contact an HVAC professional.

Manual Balancing

You might be able to “manually” balance the air flow by adjusting the dampers in the duct work. For example, in the summer time, you might try partially closing the dampers in the ducts going to the first floor and fully opening the ones to the second floor. This often takes a few tries to get them set right. If you have separate HVAC units feeding each floor, try setting the thermostat for the upstairs about 2-3 degrees cooler than the downstairs in the summer.  This is because heat rises.  In the winter, set the downstairs thermostat 2-3 degrees warmer than the upstairs.

Spot Treatments

Consider installing a ductless mini-split system in the rooms which are always too hot in summer and too cold in winter.  As the name implies, they do not require ductwork, so they’re easy to install and they’re super-efficient.  This will effectively make the rooms that are fed by the mini-split system their own zones, allowing you to control their temperature independently of the rest of the house.  Check out our many previous posts on mini-split systems.

Let the folks at Interstate AC Service help you sort out all the options and find the best solution for addressing your uneven heating and cooling problems. If you live in the Nashville and surrounding area, give us a call at 615-802-2665.  We’re here for all your heating and cooling needs.

Reflecting & Radiating Heat – Alternatives to Zoning (Part 2)

This is part 2 of our 3-part series on alternatives to Zoning. Zoning refers to creating separate thermostatically-controlled areas within your home to help even out the hot and cold spots.  But, before doing an expensive retro fit or buying a new multi-zoned system, try some of these things to address and possibly alleviate uneven temperatures in your home!  In this episode, we’ll focus on how Reflecting and Radiating Heat may help… and best thing is these are do-it-yourself-type projects!

Insulate the Attic

Beefing up the insulation in the attic – not just around the ducts but all around the floor of the attic – is the one thing you can do that will help the most with both heating and cooling. Plus, you’ll save money on your overall heating and cooling costs year-round.

Insulate Garage

Adding insulation to your garage, particularly to the garage doors, will prevent heat from outside radiating inside in summer, and will prevent heat loss in winter.  Not only will it make your garage a more comfortable space, but it will help your HVAC work a little less hard to keep the adjoining rooms at your desired temperature.

Reflecting Heat

Do you have windows in your garage door or attic?  What about in that one room that always seems to be too hot in the summer and too cool in the winter?  Try Iining the insides of the windows with a UV-reflective window film, which can block 99% of the sun’s UV rays while also reducing heat loss in winter by 30%.  Many types and colors are available, and some are transparent and easily removable.

Radiant Barriers

Consider adding a radiant barrier in the attic to reflect some heat away. A radiant barrier is a highly reflective material that reflects heat rather than absorbing it.  Attics with R-19 or better insulation and a radiant barrier – such as foil-laminated OSB panels or thin sheets of aluminum – may reduce an attic’s temperature by up to 30°F.

A cooler attic or garage means less heat moving into your living space!  This increases the efficiency of your ductwork, prolongs the life of your HVAC, and saves on your energy bills.

While we can’t help you with many of these DIY projects, we can help make sure your heating and cooling units are maintained in top shape for peak efficiency, and help you find the best solution for addressing your uneven heating and cooling problems. If you live in the Nashville or surrounding area, call on Interstate AC Service at 615-802-2665. We’re here for all your heating and cooling needs.

Sealing & Insulating Ducts – Alternative to Zoning (Part 1)

In a previous post, we talked about zoning: creating separate thermostatically-controlled areas within your home to help even out the hot and cold spots. Although zoning can save you up to 30% in energy costs, it is not without cost itself. Suppose you don’t want the expense of replacing your current system with a new multi-zoned HVAC unit, or re-working your current ductwork layout to accommodate a retrofit. Never fear! There are lots of things you can do to address and possibly alleviate the uneven temperatures in your home. In this post (the first of a 3-part series), we’ll focus on how sealing and insulating ducts may help.

Step 1: Seal the ducts

Ductwork is used to distribute the heated or cooled air throughout your home.  In a typical home, 20-30% of the air in the ductwork is lost due to leaks, holes, and poor insulation.  The result is difficulty keeping the house comfortable no matter how the thermostat is set.  Check the ducts in your attic, crawl space, and basement, and look for holes or gaps, areas where the ductwork has been crushed or kinked, or has become disconnected.  Repair and seal the holes using mastic sealant or metal-backed (foil) tape – NOT the typical grey fabric duct tape! Contrary to its name, “duct tape” is not the best solution for sealing ducts.  Cloth-backed utility tapes are not recommended because they will fall off easily, degrade with extreme heating and cooling, and do not reflect heat.  Look for aluminum-backed tape with the Underwriters Laboratories (UL) logo. Duct mastic is the preferred material for sealing ductwork seams and joints, especially irregular or jagged edges.

Step 2: Seal Registers & Vents

Check all the air register vents in each room, and the return air grill, to ensure there is a tight seal between the duct opening and the grill, that there are no tears in the ductwork from debris falling inside the register, and that the duct has not torn away from the opening.

Step 3: Insulate the ducts

Insulate the ducts, especially in the attic where the temperatures soar in the summer, and in the crawl space and basement where the temperatures are coldest in the winter.  Wrap all ducts with foil-faced fiberglass insulation having an R-6 value or greater and seal the joints with foil-faced duct tape.

Prefer a hands-off approach to your ductwork?  If you live in the Nashville and surrounding area, call on Interstate AC Service at 615-802-2665 to help with ductwork repair, or whatever heating and cooling issues you may have.  We’re here for you!

MOLD: Eliminating and Preventing It

The long, humid summers in Middle Tennessee are conducive to mold and mildew and its associated odors forming in your home.  In this post, we’ll help you get to the bottom of any mold issues you may have and alleviate this smelly and potentially hazardous problem.

What is Mold?

Mold is a microscopic fungus that travels as spores in the air and dust all around us – inside and outside.  It thrives in moisture and easily builds colonies.  Mold can cause health problems for you and your family – such as sinus, allergy, and respiratory issues.  Some molds produce deadly mycotoxins – the so-called “toxic molds” or “black mold” – which can cause neurological issues and even death.  Contrary to popular belief, not all black-colored mold is the toxic type, and not all strains of toxic molds are black-colored.  However, anytime you see mold, it bears investigation.

Causes & Prevention

To begin ridding your home of the foul odors and health hazards caused by mold and mildew – and to prevent them from re-occurring – here are some things you can do:

  1. Change air filters.  If you have not been changing your air filter on a regular basis, change it!  Your system’s filter pulls odor-causing contaminants out of the air and if the filter is overloaded, the captured contaminants could be recirculating back into your home when the air conditioner is in use.
  2. Clean-up the environment.  Since mold spores are most prevalent in dust, be sure to vacuum and clean your surroundings regularly, including changing linens.  Use exhaust fans while showering and cooking to dissipate humidity as needed.
  3. Fix leaks & replace seals.  Make sure there are no active leaks around appliances and plumbing, in the basement, crawl space, and roof. Replace the seals around the tub, shower, or windows where moisture collects. If there was ever a flood where the carpet, flooring, or drywall got wet, don’t just “let it dry” – get it replaced!  This can be a particular problem in Nashville, where so many houses were damaged in the 2010 floods, or experienced a burst pipe or ice damming in the winter which caused interior flooding.
  4. Fix drainage issues. Check for any standing water or drainage issues around the foundation of your home. This may be due to landscaping or erosion issues, or to faulty gutters.  Get the basement waterproofed or install a sump pump, if necessary. See our video Excess Humidity: Causes & Solutions.
  5. Service the HVAC system. During a spring/summer HVAC maintenance visit, the evaporator coil and condensation lines are cleaned. This is crucial, since a condensate drip pan is the perfect environment for mold and algae growth and is the second leading cause of AC failure.  See our video Clean Condensate Drain Lines to Prevent Mold.
  6. Check the ductwork. If you turn off your HVAC system and wait 20 minutes and the mildew smell or foul odor seems to dissipate, and returns when the system is back on, that could be a sign that the problem lies in your ductwork. Moisture and odors can enter the ductwork through a tear, gap, or hole in the duct, and then circulate through your home. In some cases, duct cleaning or replacing the ductwork may be necessary, but if caught early, just re-sealing the duct may do the trick.
  7. Test.  Buy a home mold testing kit – easily obtainable at local hardware and home supply stores for under $10. Get at least one test kit per floor, and a separate one for the basement.  After setting up the kit in the house for the required length of time (usually a few days), mail it off to a testing lab to find out what types of molds are present and whether there is cause for concern (note: a lab testing fee of about $40 may apply).  If you’re buying a new or pre-owned home, get a professional mold inspection from a reputable company with appropriate certifications.
  8. Removal & remediation.  Mold removal and remediation is a specialty of its own, and not something a homeowner should attempt themselves.  It requires specialized training, equipment, chemicals, and wearing of personal protection devices. Use only companies that are specifically certified and licensed for this type of work.

If you care about the quality of the air you and your family breathes every day – and want to prolong your HVAC investment – call on Interstate AC Service at 615-802-2665.  We’re here to help with all your heating and air-conditioning needs.

Which HVAC Brand is Best?

We’ve been in the business almost 20 years now and have installed and serviced a variety of HVAC units. We are not paid by manufacturers to promote their brand(s); instead, we recommend brands based on our vast experience and our customer’s individual needs.  If the customer has a preference for a certain brand, we do our best to provide it.  But, if you really want to know which brand is best, here are the facts:

The Dirty Little Secret

When you look beyond the label slapped on the outside of the unit, you’ll see that most of the internal components are the same.  There are about six HVAC equipment manufacturers in the U.S. who make about 150 different brand names.  Many of them use the same internal components and are produced on the same assembly line in the same factory.  Goodman and Amana are made in the same factory, yet Amana typically costs more.  Carrier, Bryant, Payne, Tempstar, and Day and Night are made in the same factory, yet Carrier has more name recognition due to more advertising.  York and Luxaire are both owned by Johnson Controls.  There’s almost no difference between Trane and American Standard.  Lennox, Ducane, and Concord are all made by Lennox.  Even less obvious is that some of the internal components of all brands are made by just a handful of third-party companies, making many components interchangeable between brands.  With so much the same, what’s the real differentiator?

The Real Differentiator

Unlike many other products, when you purchase an HVAC system, much of the design and engineering occurs on-site (at your home).  Each home is different and presents different challenges with ductwork, physical location, clearances, etc.  No brand, no matter how much it cost and its reputation, will perform reliably if not installed and maintained correctly.

The overwhelming majority of HVAC failures are the result of improper installation or maintenance.  In fact, a good percentage of our business comes from people who hired the cheapest contractor to install their unit, or who think they saved money by not having regular spring and fall maintenance.  There’s a proper way to install and maintain an HVAC unit and it’s worth paying for that expertise, because going with the lowest bid can often cost you later.

Just as not all doctors, mechanics, or hair stylists are the same, neither are all HVAC contractors.  Sometimes, it’s worth going a bit out of your way, or waiting an extra day for an appointment to get a professional you trust.

Pitfalls to Watch For

Watch out for contractors who:

  • will offer you a great deal on a discontinued model,
  • do not provide continuing education for their technicians or use transient laborers,
  • don’t inspect your existing ductwork (if it’s a replacement) or will quote you a price over the phone,
  • won’t be around to honor the service agreement you purchased.

At Interstate AC Service, we use only qualified, licensed HVAC service technicians, we never use undocumented workers, we provide continuing education to our technicians, our technicians are not paid on commission, and we are committed to customer service.

Buyer Beware!

Don’t be fooled by a system that says it will last for 20 years.  Not without regular maintenance it won’t!   If you neglect your system, it won’t matter what brand you buy!  Here are some other things to watch for:

  1. Proprietary Design:  With some brands, the parts may be proprietary and not interchangeable.  So, there may be longer wait times for replacement parts because you can only get them from one manufacturer, and it may make the unit more expensive or difficult to maintain over time.
  2. Specifications:  When comparing units, be sure you’re comparing apples to apples.  Comparing a SEER 14 unit to a SEER 21 unit is not valid, because each is built to different specifications and their cost to operate varies widely.  Be aware that not all manufacturers offer units with the same SEER rating (Don’t know what a SEER is? Check out our post What’s Your SEER?).
  3. Features:  Look at the extras that may be rolled into the price.  Is part of what you’re paying for the extended warranty?  A bigger thermostat screen might not be worth paying extra for, but a quieter unit may be… only YOU can determine what features are of value to YOU.
  4. Reviews:  Few people will go online to write something positive about an air conditioner, heat pump, or furnace.  It’s only when it doesn’t work that people typically feel compelled to write a review.  Keep in mind when reading reviews, you cannot know reliably what the circumstances were.  Most failures are not due to the workmanship inside the unit but to the faulty installation and maintenance.  Did the installer install a mismatched AC condenser and evaporator?  Was the unit maintained under a service contract the entire time?  Take the reviews online with a grain of salt!
  5. Allegiances: Use an impartial contractor – one that is licensed to install and service all major brands.  A “factory-authorized dealer” for a single brand can only offer you the prices and features of that brand, even if that might not be best for your needs.  Not having a vested interest in one particular brand means you’ll have more options. [Note: Interstate AC Service is licensed to install and service all major brands – both residential and commercial.]

Bottom Line

The most important aspect of your HVAC system is not the brand you choose, but the contractor!  Except for minor differences, all brands are fairly comparable, but it’s the installation and service that matters.  Unfortunately, buying a “top” brand (one you’ve heard of or has good reviews) doesn’t matter much when it comes to HVAC units.

If you live in the Nashville or surrounding area, and need help with an HVAC issue at your home or business, know you can call on Interstate AC service at (615) 832-8500.  We’ll provide unbiased, professional service you can trust. We never forget we’re here for you!

Be Pro-Active With an Off-Season Replacement

It’s no surprise that the demand for air-conditioners is highest in the summer, and the demand for furnaces is highest in the winter.  If you have an old or failing HVAC system, it will likely go out when it is stressed the most – on the coldest or hottest day of the year – when the demand is greatest.  Well, that’s when everyone else is calling for service, too!  So you may find, no matter what HVAC company you call, they won’t be able to get to you right away.  [If you’ve ever had the unfortunate experience of needing a tow truck after slipping on snowy/icy roads, you know what I mean!]

Be Pro-Active!

The best time to get a new furnace is in the spring and summer, and the best time to get a new air-conditioner is in the fall and winter.  Of course, if you’re replacing an entire system – like a heat-pump that is used for both heat and air – then the best time is during the “in-between” seasons – spring and fall – when systems are less stressed and the HVAC companies are not overrun with service calls.

Benefits of Being Pro-Active

Being pro-active has many added benefits:

  1. You may get off-season discounts or manufacturers’ rebates.  Plus, you’ll have time to get a professional analysis done of your home, get 2 or 3 quotes, and do research on the companies.  You won’t be in a “desperate” situation: like having no air conditioning on a day with 90+ degree temperatures and 90% humidity!
  2. It’s less disruptive for the homeowner.  You can schedule the install at a convenient time for you, and you won’t have to worry about being down (without heat or air) when it’s most needed!  Face it: it’s much less of an “inconvenience” to be without heat or air (while your old system is being removed and your new system is being installed) when it’s not freezing cold or blazing hot out!
  3. It gives you time to research the various kinds of systems, and the various features, to find the one best for you.  When it’s 7 degrees out and you’ve been without heat for 12 hours, you’re not going to be in much of a “shopping” mood and may wind up getting whatever is readily available and can be installed quickly, rather than the best system to meet your needs.

Think Spring!

If you know your HVAC system won’t stand another winter or summer… don’t just let it slip your mind as we approach spring.  That’s when you SHOULD be thinking: now’s the best time to replace it!  Remember, the best time to buy a new system is before your existing system fails, and before the extreme hot or cold weather arrives.

If you need heating or air-conditioning service, no matter the season, call on Interstate AC Service at 615-802-2665.  We’re here to provide all of Nashville and surrounding areas with professional , dependable HVAC system service and installation.