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Frequently Asked Questions

Below are FAQs our team often hear from homeowners. Don’t see your question? Feel free to contact us!

The ideal temperature to set on your thermostat will vary by season.

In the summer, it’s recommended that you set your thermostat between 70˚ and 75˚ while you’re at home. When you’re away from home, setting the thermostat nearer to 80˚ can save energy, which will save you money on cooling bills.

In the winter, it’s recommended that you set your thermostat between 65˚ and 70˚ while you’re at home. When you aren’t at home, set it about 5˚ lower to save energy and money.

One of the best ways to easily control your thermostat settings and energy use is with our state-of-the-art smart thermostats.

The best size for your new HVAC system will depend on a number of factors, like:

  • The size and layout of your home
  • The number of windows and doors your home has
  • The cooling load required to meet your comfort needs

The best way to ensure you select a perfectly sized HVAC system for your home and needs is to work with an expert at National Heating and Air Conditioning. Our experts will work closely with you to determine the right size system—and we can handle the complete installation process.

The lifespan of an AC system will depend on various factors, like:

  • The type, brand, and model of the system you have
  • Whether the system was installed properly
  • How frequently it’s used
  • How often it receives maintenance service

On average, air conditioners can last about 10 to 15 years. The best way to prolong the lifespan of any AC system is to make sure it:

  • Is properly installed by trained professionals
  • Receives regular maintenance at least twice a year

We recommend air conditioner maintenance service at least twice a year, once before you turn your system on for spring or summer and again before you shut your system down in fall or winter.

If anyone in your family has respiratory issues or a compromised immune system, more frequent AC maintenance service may be better for you.

When you get regular air conditioner maintenance, you’ll keep your system operating in peak condition, which can prolong its life and save you money in the long run. It can also ensure optimal indoor air quality so you and your family can breathe easier season after season.

When you notice strange noises coming from your cooling system, take that as a red flag that something’s wrong. Some common noises that ACs make when they need repairs include:

  • Banging
  • Clanking
  • Hissing
  • Buzzing
  • Chattering

These sounds can indicate anything from loose components to electrical problems, refrigerant leaks, and more. So, if you start hearing weird noises from your AC, call for professional AC repair service ASAP.

There are many causes for a house being uncomfortably cold in the winter, and there are at least as many solutions. Typically, a cold house is a drafty house with significant air leakage and insufficient insulation. Sometimes it can be caused by a leaky duct system or a poorly performing furnace. The experts at National Heating and AC can help you determine the exact cause of discomfort in your home, and offer the most cost effective solution to solve it.

Breakthrough technology over the last few years has made it possible to monitor and manage your home or building’s energy consumption via WiFi, allowing you to view your home’s energy use in real time and even turn devices on and off. It is even possible to manage energy use using your smartphone!

Experts do not recommend duct cleaning as an effective way to improve indoor air quality. This is because the bulk of dust and other indoor air contaminants that enter your home through your duct system actually come from the crawlspace, attic and walls. Leaky ducts allow this dust to enter the duct system, where it is delivered into the building’s living space. With Aeroseal, these leaks are eliminated, and any existing dust or debris existing within the duct system is eradicated through your HVAC system’s filters. Cleaning your ducts is necessary only in a few extreme cases, such as rodent infestation or if ducts are sufficiently clogged to prevent adequate airflow.

What To Expect

Discover the Difference

Satisfaction
Guaranteed

Your comfort is our top priority, so we'll work tirelessly to guarantee you're 100% satisfied with our service.

Over 90 Years
Experience

We have been providing HVAC services since 1931, so we have the experience to solve any of your problems.

Trained
Technicians

Our team stays up to date with and continuously trains on all the latest HVAC technologies.

24/7 Emergency
Service

HVAC systems choose the worst times to breakdown, so we're available nights, weekends, and holidays to help!

Free
Estimates

With our free estimates on replacements, you can take the stress out of finding an HVAC contractor.

Easy
Financing

Costs should never be a barrier to receiving the services you need, so our team offers easy financing options.

Satisfaction Guaranteed

Your comfort is our top priority, so we'll work tirelessly to guarantee you're 100% satisfied with our service.

Over 90 Years Experience

We have been providing HVAC services since 1931, so we have the experience to solve any of your problems.

Trained Technicians

Our team stays up to date with and continuously trains on all the latest HVAC technologies.

24/7 Emergency Service

HVAC systems choose the worst times to breakdown, so we're available nights, weekends, and holidays to help!

Free
Estimates

With our free estimates on replacements, you can take the stress out of finding an HVAC contractor.

Easy
Financing

Costs should never be a barrier to receiving the services you need, so our team offers easy financing options.

What Our Clients Are Saying

Our Neighbors Are Saying

Great service. Turned out it was only a bad fuse on my new unit, they instilled a few months ago. Very friendly guy and took the time to show me what he was doing, when…

Rob K.

I've been doing business with National for 30+ years. Their technicians are very knowledgeable and professional. The company is top notch.

Junior E.

Gina was a pleasure to work with and was very helpful in recommend specifications that met our application. The pricing was very competitive, and both the quote and scheduled install date were lightning fast!

Robert T.

This was just our semi-annual preventative maintenance and it was done on schedule. Our technician was courteous, friendly and knowledgeable. He wore fresh shoe covers into our house to protect our carpets and was wearing…

Field B.

Chad was an awesome service tech. Did an amazing job. Kept me informed of everything he was doing. Showed me a part that was bad and my furnace that had probably contributed to my electric…

Gina W.

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