24/7 Emergency Line 630-341-3996 francohvac@hotmail.com

Residential HVAC Services

With more than 20 years of experience, Fahrenheit Mechanical Inc. is here to serve all of your Heating, Ventilation, and Air Conditioning (HVAC) needs. With well-trained and professional service technicians, our promise is that any job, be it installation, repair, or maintenance, will be done correctly, ensuring you and your family are comfortable through any season of the year.

We service and repair all major brands and most systems. 


When an important piece of equipment in your home malfunctions, you can only hope it’s remedied as quickly as possible. No one wants to be without heat in mid-winter or AC in mid-summer. With a dedicated team and streamlined processes, we offer speedy repair services, returning your home to the comfort level you know and love. We even offer an emergency service line for when unexpected problems occur outside of our regular business hours. Call (630) 675-6998


Routine maintenance on your HVAC equipment can keep your unit ahead of the game. Checkups from our experts will keep you on track for tune ups and adjustments, prolonging the life of the equipment and enhancing performance, which in turn keeps your energy bills low. And, our diagnostic procedures indicate when a part is likely or soon to fail, so that it can be replaced before it causes any problems.

Call Fahrenheit Mechanical today to schedule preventative maintenance for your existing furnace, air conditioner, heat pump or water heater and maintain equipment efficiency. We also provide maintenance options on a monthly basis, so you don’t have to worry about missing a tune up!


Residential Services



All furnaces, even the most reliable, need routine maintenance. Without it, the efficiency of your furnace will go down, and the likelihood of needed repairs will go up. Upkeep and pro-active replacements can help ensure your energy bills are low and that you’re less likely to ever be dealing with a furnace on the fritz.


Air Conditioners

All equipment, even the most reliable, needs routine maintenance. Without regular maintenance, an air conditioner loses about 5% of its original efficiency for each year of operation. The good news is that you can recover most of that lost efficiency through regular maintenance or in worse cases a pro-active replacement.


Heat Pumps & Mini Split Systems

Heat pumps can be ducted or ductless. We can help you find a solution suitable to the systems that may already be installed in your home. We also deal in Mini Splits, which are good for homes that need a zoning style. Mini Splits are small, massively efficient, and much quieter than traditional split air equipment.


Water Heaters

It’s important to clean, maintain and regularly service your residential water heater. A properly maintained water heater can run efficiently for 15 years or more. For water heaters with storage tanks, you’ll want to partially drain the tank a few times per year in order to remove debris and sediment. Be sure to test the temperature pressure relief valve every year and check the sacrificial anode rod once every 3 years.  


Frequent Questions


How often should I check my air filter?

We suggest checking filters monthly. If you have a disposable type filter, (these usually have a cardboard edge), and if it is dirty, just replace it. Don’t attempt to clean it. Some higher efficiency 1″ pleated air filters can go up to three months before needing replacement. But in the higher-use seasons, it’s better to check more often.


Why do I need a humidifier?

Maintaining proper and consistent humidity is also important for the wood inside your home; flooring, doors, and even pianos can shrink, crack, and warp if not properly humidified.

Energy savings is another benefit of keeping the proper humidity level. You will actually feel warmer and more comfortable in humidified air, so you can turn your thermostat down about 2 degrees (saving money), and still feel just as warm. Seriously, it works!


Should I have my air ducts cleaned?

Many people have allergic reactions to pollen, bacteria, dust mites, and animal dander. Allergies including hay-fever and asthma affect 41 million Americans or about one out of six people.


What is better: Gas, Electric or Oil?

Well, there is no single, correct answer. It depends really on a bunch of factors, such as… cost, comfort, efficiency, maintenance, reliability, availability. Each system has its own unique advantages and disadvantages. Call us to find out which system is best for you!


825 S. Rowhling Rd. 

Addison, IL 60101