HVAC FAQ – Our Frequently Asked Questions

Do you have questions about your HVAC equipment or our company? Well, we have answers! Whether you want to know how often you should change your air filters or what sort of warranties and guarantees we offer, we have what you’re looking for here on our HVAC FAQ page. And don’t forget to check back often, as this page will be updated regularly!

Contact Dowd Mechanical, Heating & Air Conditioning at 215-607-6448 for all your HVAC services in Philadelphia, Bensalem, and Yardley, PA!

Company FAQs

No matter how well made a piece of equipment is or who manufactures it, its comfort, reliability, and energy efficiency are ultimately in the hands of the company doing the installation. Here are the types of questions you should ask any HVAC contractor—and how we would respond! We think you’ll like our answers even better than the questions.

Are you licensed and insured?

Yes! We are fully licensed and insured.

How long have you been in business?

Our family-owned company based in Bensalem, Pennsylvania (a suburb of Philadelphia) has been in business since 1997.

Do you provide workman’s compensation for your employees and carry liability insurance?


Do you offer references?

Of course! We’re more than happy to offer a reference list upon request.

Do you have any client testimonials I can read?

We have received many unsolicited testimonials from satisfied clients!

Check out our HVAC testimonials »

Do you carry all the latest heating and cooling equipment—and are you properly trained and certified to install or repair this equipment?

Yes! Although we are a certified Trane dealer, we also have access to any other equipment manufacturers you already have or may be interested in—and all of our HVAC technicians are fully trained and qualified to handle the most current equipment.

Do you provide all warranties and guarantees in writing?

All of our guarantees are written and honored with promptness and courtesy.

Do you mind answering questions?

There is no such thing as a dumb question. It is our job to help you find out what you need to know!

Are you fully staffed?

Dowd Mechanical, Heating & Air Conditioning maintains a fleet of vehicles fully stocked for the jobs for which they are designated, and our name, logo, phone number, and address are prominently displayed on all of our vehicles. Whether it is a cooling or heating task or a full system replacement, we only send the right people with the expertise required for the job.

Do you have a service department staffed by real people, or is there just an answering machine?

Our office, staffed by real people, is open from 8 a.m. – 5 p.m., Monday to Friday. After normal business hours, an experienced technician is available to answer your calls and provide emergency service.

Do you offer financing?

Many of our customers believe that ultimate home comfort is highly desirable, but financially out of reach. That’s why at Dowd Mechanical, Heating & Air Conditioning, we are proud to offer a wide variety of residential and commercial systems that can be tailored to any budget. In addition, we also participate in various rebate programs, and will help you file the necessary rebate forms, if necessary. We offer financing with approved credit, so you can buy today, while paying over time.

Learn more about our HVAC financing »

Do you accept credit cards and debit cards?

We accept major credit and debit cards from VISA and MASTERCARD.

Do you have preventative maintenance plans and service agreements?

We have a variety of different service plans for our residential and commercial customers to assure uninterrupted comfort, extend equipment life, and peak equipment efficiencies.

Learn more about our HVAC maintenance agreements »

Do you provide a written proposal?

Of course. Our written proposal will clearly define the equipment to be used, the work to be performed, and the agreed upon price. We can also usually offer you a choice of equipment with “good,” “better,” and “best” options.

Why aren’t you as cheap as my brother-in-law, who does HVAC equipment on the side?

Don’t be misled to believe that “low price = best value.” When buying any HVAC component or service, the lowest price is virtually never the best value. And while your brother-in-law may be a good guy, a part-time contractor is never going to be able to provide you with the service and quality that a full-time professional employed by a company with the experience and reputation of Dowd Heating and Air Conditioning could.

Do you service after the sale?

Our business is built on getting and keeping customers by providing premium service at a fair and reasonable price. We are not completely comfortable until you are.

Learn more about our HVAC repair & maintenance services »

Can you provide a complete service history at the touch of a button?

All of our services are completely computerized, providing a complete record of every detail including the make and model of equipment we install, date of installation, warranty registration information, and the nature of every call made.

Heating & Cooling FAQs

What does “SEER” mean?

You’ve probably seen SEER labels on every air conditioner being sold in the last couple of years, but what does “SEER” mean, exactly? SEER, or seasonal energy efficiency ratio, is a mathematically determined ratio measuring the amount of energy your AC uses to do its job—the higher the SEER, the higher the energy efficiency.

Learn more about what SEER means »

How do I fix a frozen air conditioner?

Sometimes fixing your frozen air conditioner is as easy as turning up the temperature on your thermostat, but other times, the answer to “how do I fix a frozen air conditioner?” can be more complicated than it seems. The first thing you should do when your AC is frozen is shut it down. Turn the whole system off, lay down some towels, and wait for everything to defrost—only then can you start diagnosing and fixing the problem.

Find out how to fix a frozen air conditioner »

How often should I replace my HVAC air filters?

Your air filters should be replaced every one to three months depending on usage. This is extremely important to the performance of your heating and air conditioning systems and your indoor air quality.

Find out how often you need to replace HVAC air filters »

How does an air conditioner work?

Your air conditioner makes the air in your home cooler by removing heat from the indoor air and transferring that heat to the outdoor air.

Heat is extracted from your home by passing the indoor air across a refrigerant coil in the indoor unit. Refrigerant lines then carry the heat to the outdoor unit, where it is released into the outside air. The cooling cycle continues until the indoor temperature reaches the thermostat setting.

Find out how an air conditioner works »

I’ve been seeing the terms SEER, AFUE and HSPF a lot lately—what do they mean?

These are all measurements of the energy efficiency of your HVAC equipment—and the higher the number, the better!

  • SEER – Seasonal Energy Efficiency Ratio
  • AFUE – Annual Fuel Utilization Efficiency
  • HSPF – Heating Seasonal Performance Factor

How often should I have my HVAC equipment serviced?

If you want to ensure optimal performance of your heating and cooling equipment, you have to have it serviced annually. Your heating equipment should be serviced at the end of the summer or the beginning of fall (the start of the heating season), and your cooling equipment should be serviced at the end of the winter or the beginning of the spring (the start of the cooling season).

Learn more about annual HVAC maintenance »

What is a zoned air conditioning system?

A zoned air conditioning system is a network of thermostats and duct dampers that regulates the amount of cooled air each zone (one or more rooms) receives throughout the day. Zoning technology allows homeowners to cool only the occupied areas of living space at any given time.

Learn more about zoned air conditioning systems »

Can a zoned system lower my utility bills?

A zoned air conditioning system is designed with comfort and energy efficiency in mind. Consider this: the more difficult it is to maintain agreeable temperatures and comfort throughout your home, the more energy dollars you may potentially save.

Learn more about how a zoned AC can lower your utility bills »

What size air conditioner do I need?

The size of your air conditioner will be largely dependent on the size of your home and the cooling demands it has. It’s incredibly important that your system is correctly sized or else you’ll be stuck paying higher utility bills for substandard results!

Learn more about what size air conditioner you need »

Why is my air conditioner blowing warm air?

There are a lot of reasons why your air conditioner could be blowing warm air, including issues with the thermostat settings, ice, and more.

Click here to find out why your AC is blowing warm air »

Why does my AC smell like mildew?

The main reason why this is happening is because there is mildew or some other spores getting into the air in your AC somewhere—but don’t worry, it can be fixed.

Learn more about why your AC smells like mildew »

Do you have an HVAC question that isn’t answered here? Or do you want to learn more about our company? Contact Dowd Mechanical, Heating & Air Conditioning today!