Frequently Asked Questions

You'll find answers to some of the most commonly asked questions here.

Interested in learning more? Read our helpful articles in the Ask the Experts section. And feel free to call (952) 881-9000, or use the Contact Us form, if you have a question we didn't cover.

Q: How often should I have my furnace or air conditioner serviced?
A: All manufacturers recommend annual maintenance on equipment to maintain their factory warranties. Warranties may be denied if the unit has not been regularly serviced.

Q: How long does a tune-up take?
A: Tune-ups usually take about 1 hour.

Q: How long does an in-home estimate for new equipment take?
A: Our Comfort Advisors need about 1.5 hours to adequately assess the needs of your home.

Q: What brands of equipment do you carry?
A: Lennox, Aire Flo, Armstrong, Carrier, Venmar, Healthy Climate, Aprilaire, Dynamic, Triangle Tube, Crown

Q: Do you service and replace boilers?
A: Yes, we service and carry replacement boilers.

Q: How long does a furnace and A/C system last?
A: In Minnesota, the average life span of a furnace and AC unit is 15-20 years.

Q: How often should I change my furnace filter?
A: If you are using a 1-inch filter, it should be changed monthly. If you are using a 4-to-5-inch filter, it should be changed every 3-to-4 months. There are some high-efficiency filters that last as long as 12 months.

Q: Are you NATE-certified?
A: Yes, we employ NATE-certified technicians.

Q: How long have you been in business?
A: We have been in business since 1958, 53 years.

Q: Do you have 24-hour service?
A: We have an entire service department, not just a "service guy". We can provide emergency service any time you need it, 24 hours a day.

Q: Do you sell parts?
A: Yes, we have a stocked parts department at our office in Mendota Heights.

Q: How much expertise do your technicians have?
A: Our techs continually train to stay on top of the latest technology in the industry and several of them have master's licenses.