7:30am-5pm Monday-Friday | 4300 Creek Road
Blue Ash, Ohio 45241
call us (513) 621-4620

Frequently Asked Questions

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

What Temperature Should I Set on My Thermostat?

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.

What Size HVAC System Do I Need?

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.

How Long Does An Air Conditioner Last?

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

How Often Should I Schedule AC Maintenance?

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.

Why Is My AC Making Odd Noises?

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.

My house is cold. Do I need a larger furnace?

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.

Is it possible to manage my home’s energy consumption from a smartphone?

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!

Do I Need my Ducts Cleaned?

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 buiding’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.

See What People Are Saying About Us

" This company is always friendly and on time. They work hard and always tell me what they think they need to do before they do it. They clean up well after the job is done."

Jenny, Cincinnati

" Keith, Dave, and Randy arrived on time. They were very thorough with explaining all of our new equipment. My family and I could not be mored pleased with National Heating and Air and their employees. I am a very happy..."

Erin, Cincinnati

" Sales and installation was on time, thorough, completed on time and did a quality job at a very reasonable price. Two weeks after we are completely satisfied."

James H., Cincinnati

" This company was wonderful! They even called before they came to ask if they could bring me anything!!! The technician was very thorough and very courteous. I will use them as my heating and air conditioning company loyally. In fact,..."

Customer, Mainville

" I was told by my previous contractor about the possible cost of repairing my 12-year old heat pump and decided a new one was desirable. They gave me a quote and I contacted two additional contractors including National. The rep..."

Pete, Cincinnati

" They do boilers as well and I think they do a great job.  I’ve had other people come out to do the work and they settled with it, but it didn’t work very well... I had National Heating & Air..."

Carol, Cincinnati

" National Heating and Air Conditioning were excellent. They arrived within 30 minutes of request, very professional, courteous and thorough. The job was completed on time too."

James, Cincinnati

" The installation team arrived on time, installed the heat pump and blowers in an efficient and timely manner.  They took care not to soil any carpets etc. and completed the job in a day as scheduled.  Totally satisfied with this.."

Peter, Cincinnati

" Their technician Dave was knowledgable, professional, and friendly - and arrived within 30 minutes. Scott's analysis was on target and Dave was able to fix and service my unit in about 45 mins. I would recommend National without hesitation. Thanks..."

Miguel, Cincinnati

" Steve, sales very knowledgeable and friendly, took the time to sell us a new unit. Felt we were buying unit for our house. National showed up next week and installed in a day. Very professional, curious and timely. Absolutely recommended!"

Justin, Cincinnati

" Keith was on time & finished the job 1 and half hour earlier than expected. Worked hard & cleaned up after he was done. Very polite & very professional. Did a good job."

Karen & Randy, Cincinnati
The National Difference: Longest running Bryant dealer in Cincinnati
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The information on this website is for informational purposes only; it is deemed accurate but not guaranteed.
It does not constitute professional advice. All information is subject to change at any time without notice. Contact us for complete details.