FAQ
Frequently Asked Questions
Quick answers from the Grove Mechanical team.
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Furnaces
+Do you offer 24/7 furnace repair?
Yes. Grove answers no-heat emergencies around the clock across northwest Minnesota.
+Do you repair natural gas and propane furnaces?
Yes, we repair gas and propane furnaces of all major brands.
+How do I know if I need repair or replacement?
If your furnace is 15+ years old and needs a costly repair, we'll show you both options with upfront prices.
+How long does furnace installation take?
Most furnace replacements are completed in one day.
+What brand of furnace do you install?
As a Lennox Premier Dealer, we primarily install Lennox furnaces.
+Is financing available?
Yes, we offer financing on new furnaces, air conditioners and heat pumps.
+How often should a furnace be serviced?
Once a year, ideally in early fall before heavy use.
+What does a furnace tune-up include?
Burner and flame sensor cleaning, heat exchanger inspection, carbon monoxide test, airflow and safety control checks.
Air Conditioning & Heat Pumps
+Why is my air conditioner blowing warm air?
Common causes are a dirty filter, a frozen coil, a failed capacitor or low refrigerant.
+Do you repair heat pumps too?
Yes, we repair air conditioners and heat pumps.
+What SEER rating should I choose?
Many northwest Minnesota homes do well in the 16–18 SEER range; heat pumps benefit from higher efficiency.
+How long does AC installation take?
Most replacements take one day.
+How often should my AC be serviced?
Once a year, in spring before cooling season.
+Does maintenance include the indoor air handler?
Yes, we check indoor and outdoor equipment, including the coil and condensate drain.
+Where do ductless mini splits work best?
Additions, garages, sunrooms, finished basements and older homes without ductwork.
+Do mini splits heat in winter?
Cold-climate models provide efficient heat well below zero.
+Do heat pumps work in Minnesota?
Yes. Cold-climate heat pumps, often paired with a furnace, work well in our winters.
+Can a heat pump replace my AC?
Yes, a heat pump cools like an AC and also provides efficient heat.
+Why is my heat pump blowing cold air in winter?
It may be in defrost mode, or have a reversing valve, refrigerant or control problem.
Boilers & Geothermal
+What should my boiler pressure be?
Usually 12–15 PSI cold and under about 25 PSI hot for residential hot water boilers.
+Why does my boiler pilot light keep going out?
Most often a worn thermocouple, dirty pilot or draft problem.
+How often should a boiler be serviced?
Once a year before heating season.
+How long do boilers last?
Many last 20+ years with regular maintenance.
+Is geothermal worth it in Minnesota?
Geothermal is among the most efficient ways to heat and cool, and works well in cold climates.
Ductwork & Indoor Air Quality
+Do you fabricate metal ductwork?
Yes, we build custom sheet metal ductwork and use flex duct only where it makes sense.
+Why are some rooms colder than others?
Undersized, leaky or crushed ducts are a frequent cause. Duct modification and balancing can fix it.
+How does a whole house humidifier work?
It connects to your furnace and adds moisture to heated air as it moves through the ducts.
+What humidity should I keep in winter?
About 30–40%, lower on the coldest nights.
+Do I need a whole house dehumidifier?
If your basement feels damp or smells musty in summer, a whole house dehumidifier can help.