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"Providing Comfort Solutions
for Delmarva for over 60 years"
24 Hour Service 302-629-9400

Frequently Asked Questions

General FAQs

Do I need preventative maintenance?

Yes. Heating, Ventilation, Air Condition is what provides a comfortable living space regardless of the outside temperatures, regular maintenance keeps that equipment working efficiently and less downtime issues.

Why National HVAC Service for my new system?

National has been in business for over 60 years taking pride in delivering quality products at reasonable rates. Our systems are installed by professionals that have one goal, to do the job right the first time making sure our customers are satisfied.

When should I have my system replaced?

High electric bills are normally a good sign your system is getting old and is inefficient. Older systems, 10 years or older, may use R22, a refrigerant which is no longer produced. This may result in a more expensive repair cost. Current systems offered by National HVAC carry a 10-year parts warranty and utilizes new environmentally friendly refrigerants and are much more energy-efficient.

What Manufacture Systems do you sell?

We are able to install any name brand system you would like. We recommend and provide American Standard Heating and Cooling systems. We have great confidence in their quality and dependability, and we know you will as well, after all, American Standard is # 1 in customer satisfaction.

Do you have financing for your new systems?

Yes, we offer Wells Fargo financing for qualified buyers with up to 60 months no interest financing and manufacturer rebate programs.

Does National HVAC provide Plumbing Service Plans?

Yes, we have both commercial and residential plans that can help identify and prevent problems in a home of the facility's plumbing system, regardless of the size.

How important is indoor air quality (IAQ) to my family's health?

Very important! We provide air filtration systems that are certified asthma and allergy-friendly. We also install ionization units that have been proven to be up to 99% effective against airborne pathogens including COVID viruses. IAQ solutions can contribute significantly to the quality of your indoor environment.