Skip to content


A close up of a PSI gauge.

Dirt and neglect are the top causes of heating and cooling system inefficiency and failure. To ensure energy efficient system operation, it is important to perform routine maintenance. Proper maintenance by a qualified technician is one of the most important steps you can take to prevent future problems.

Protection Plan

Recommended for:
Correctly installed systems 0-2 years old.
Savings and Efficiency
Recommended for:
Correctly installed systems 2-10 years old, and/or systems with special types of equipment. See Special types of equipment below.
Ultimate Protection and Peace of Mind
Recommended for:
Correctly installed systems 10+ years old, incorrectly installed systems of any age, or systems with special types of equipment. See Special types of equipment below.
Repair warranty.* Excludes drain repairs. 6 Months 1 Year 1 Year
Discount on repairs, filters, and lifetime system enhancements. 10% 15% 20%
Response time Priority over non members 24 Hours Same-Day
Filter credit (per contract year) - $20 $50
No overtime charges on diagnostic fee or repairs. Overtime fees apply on weekends and M-F, 5:00 p.m.-7:30 a.m. Overtime fees include an additional $50 on diagnostic fee and additional 20% on repairs. -
Discounted diagnostic charge - One half price diagnostic charge inlcuded per contract year. One full price diagnostic charge included per contract year.
Annual customer loyalty credit towards down payment on new complete system. - $50 ($500 max) $75 ($750 max)
First system monthly price, with 1/2 down payment. $25 $33 $44
Each additional system monthly price, with 1/2 down payment. $18 $22 $30
Special types of equipment and additional fees. BASIC
Additional fee per contract year.
Electronic Air Cleaner (EAC) $48 One Two
Geothermal $60 Special Types Special Types
Zoning $60 of of
Dual-Fuel $72 Equipment Equipment
Dehumidifier $72 Inlcuded Inlcuded
Mini split
(Fee per system.)
$144 $144 $144
2 Additional visits
(Visual inspection and filter change only.**)
$108 $108 $108

*Repair warranty time periods will only be honored if membership is maintained.

**Excludes cost of filter.

Additional fees for locations outside of primary service area.

Owning, or even sometimes renting, a home in Granbury, TX, requires general maintenance to keep your investment in working order. It’s really all about being prepared. Per Benjamin Franklin, “An ounce of prevention is worth a pound of cure.” Maintaining your home’s systems and appliances wards off emergency situations and costly repairs while extending your equipment’s life. Take the time and money to perform general maintenance on a regular basis. Many of the maintenance services require the knowledge, skills, and tools of a professional. During the maintenance or service call, our technician will make any necessary repairs and/or alert you of a possible situation. Call Glenn Aire Co to assist you in maintaining any of the following or to answer any questions you may have:

Furnace Maintenance

For furnaces, an annual service tune-up and cleaning is recommended, usually performed in the fall. The purpose is to keep your system running at top efficiency throughout the season, i.e., to keep you having heat when you need it. Our technician will check and clean all the connections, controls, sensors, drains, ignitor, ducts, pipes, burners, valves, motors, thermostat(s), and smoke/carbon-monoxide detectors, and instruct you on anything you could do between our service visits. As a rule of thumb, furnace filters need to be changed every three months or as needed, which is something you can do yourself with the correct filters.

Air Conditioner Maintenance

For air conditioners, an annual service tune-up and cleaning is recommended, usually performed in the spring. Our professional technician will check and clean the connections, coils, blower components, lines, refrigerant, drain, fuses, and thermostat(s), as well as lubricate all working parts. Maintenance you can do yourself between service visits is to remove any yard debris or vegetation from the top and sides of your outdoor air conditioner unit, as well as to keep it covered with an air conditioner cover or tarp in the winter.

Heat Pump Maintenance

For heat pumps, an annual service tune-up and cleaning is recommended, usually performed in the fall, same as furnaces and boilers. Our professional technician will check and clean ducts, filters, blower, indoor coil, ducts, refrigerant, electric terminals, connections, motors, and belts, as well as lubricate all working parts. Be sure to change or clean the filter every three months or as needed. You can also clean the outdoor coils whenever they seem dirty, and keep yard debris and vegetation away from the unit.

Whole-House Humidifier Maintenance

For whole-house humidifiers, an annual service tune-up and cleaning is recommended, usually performed at the same time as your furnace tune-up and cleaning. Our professionals include this maintenance along with the furnace appointment. Typically there isn’t much in the way of maintenance; however, our technician will change your humidifier pad and clean any mineral buildup you may have (in the case of hard water). Ask our technician to show you how to dissolve the buildup on your own every few months to keep your humidifier working at top efficiency.

Air-Filtration System Maintenance

For air-filtration systems, regular maintenance is something your can perform on your own. Maintenance on an air-filtration system usually just means changing or cleaning the filter every three to nine months. But you should check with the manufacturer’s specific recommendations. Changing or cleaning your filter on a regular basis will ensure the best filtration for your home as well as extend the life of the system. If you need any assistance or would like to install an air-filtration system, feel free to talk with one of our professionals at Glenn Aire Co.

At Glenn Aire Co, we’re here to to assist you in maintaining your home’s systems or to answer any of your questions about maintenance. Keeping your equipment in good working order allows you peace of mind to know they’ll be there when you need them. It also makes good financial sense to keep equipment serviced to help extend their life spans. Here in Granbury, TX, call us at 817-736-1012 to make an appointment now.

Need Maintenance Service?

Contact the experts at Glenn Aire Co.

Call us at 817-736-1012!

“Wes did a great job checking out my HVAC and replacing filters. He gave me good information on some things he noted in my electrical connections. I appreciate the service and for the concern for things in my home that I would probably not notice. As always, I appreciate the professionalism and good service from

– Marie B.

- Marie B.

“Very nice guy! Called me before he came & sent his picture & something about himself. I appreciated that! Came & checked everything & replace my filter when I asked him to.”

– Joyce M.

- Joyce M.

Glenn Aire Co proudly provides HVAC service to Granbury, Weatherford and the surrounding communities. Visit our service area page for more coverage details, call us at 817-736-1012, or request service online today.