Homeowner answers
HVAC Questions, Answered Honestly
Straight answers to the questions Eagan homeowners ask us most — costs, common problems, repair-or-replace decisions, and how to get the most from your system. Don't see yours? Call and ask a real local person.
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Part 1
Costs & pricing
How much does AC repair cost in Eagan?
Most common AC repairs in the Eagan area — capacitors, contactors, fan motors — fall in the low hundreds of dollars, while refrigerant leaks or compressor issues cost more. Every contractor in our network quotes an upfront written price after diagnosis, and the diagnostic fee is often applied to the repair, so you'll never be surprised by the bill.
How much does furnace repair cost?
Simple fixes like a flame sensor cleaning or ignitor replacement are typically inexpensive; blower motors and control boards cost more. The honest answer is that no one can price a repair before diagnosing it — which is why upfront, written estimates before any work begins are non-negotiable in our network.
How much does a new furnace or AC cost in Minnesota?
A full system replacement typically runs several thousand dollars depending on size, efficiency rating, and installation complexity. High-efficiency equipment costs more upfront but qualifies for Xcel Energy and CenterPoint rebates plus federal incentives, and lowers bills every month. Replacement quotes are always free.
Do you charge for estimates?
Estimates for replacements and new installations are free. Repair visits usually carry a standard diagnostic fee — quoted before the visit — which is often credited toward the repair itself.
Are there rebates for high-efficiency HVAC in Minnesota?
Yes. Xcel Energy and CenterPoint Energy offer rebates for qualifying high-efficiency furnaces, air conditioners, heat pumps, and smart thermostats, and federal tax credits apply to many heat pump installations. Local installers help you claim everything you qualify for.
Part 2
Repair or replace?
Should I repair or replace my furnace?
A useful rule of thumb: if your furnace is past 15 years old and the repair costs more than a third of a new system, replacement usually wins financially. Below that, repair is often the smart call. A good technician will show you real numbers for both paths — never pressure.
How long should an HVAC system last?
In Minnesota's climate, furnaces typically last 15–20 years and air conditioners 12–17, with heat pumps in a similar range. Annual maintenance is the biggest factor in reaching the high end of those ranges.
Is it worth replacing my furnace and AC at the same time?
If both are near end of life, yes — combining them saves on labor, and matched systems run more efficiently together. If one is significantly newer, replacing just the failing unit usually makes more sense.
My AC uses R-22 refrigerant. What does that mean?
R-22 was phased out in 2020, so recharging an R-22 system is expensive and gets worse every year. If your system still runs on it, plan for replacement rather than sinking money into repairs that depend on a discontinued refrigerant.
Part 3
Common problems
Why is my furnace blowing cold air?
The usual culprits: a thermostat set to 'fan on' instead of 'auto,' a dirty flame sensor, a failed ignitor, or an overheating furnace that shut off its burners for safety. Some are five-minute fixes; some need a technician — a diagnostic pinpoints it quickly.
Why is my AC running but not cooling the house?
Most often it's low refrigerant from a leak, a frozen evaporator coil, a failing capacitor, or a dirty outdoor condenser. Check your filter first — a badly clogged filter alone can cripple cooling — then call for a diagnostic if that doesn't fix it.
Why does my system turn on and off repeatedly?
Short cycling can come from an oversized system, a clogged filter, a failing thermostat, refrigerant issues, or overheating. It wears equipment fast and spikes bills, so it's worth diagnosing promptly rather than living with it.
What's that smell when I turn my furnace on?
A brief dusty burning smell at the start of heating season is normal — that's summer dust burning off. A persistent electrical or burning-plastic smell, or anything like rotten eggs (gas), is not: shut the system down and call right away.
Part 4
Sizing & efficiency
What size AC do I need for my house?
It depends on square footage, insulation, windows, ceiling heights, and sun exposure — which is why proper installers run a Manual J load calculation instead of guessing by square footage alone. Oversized systems short cycle and dehumidify poorly; undersized ones run constantly. Sizing right matters more than brand.
What furnace efficiency (AFUE) should I choose in Minnesota?
With our long heating season, high-efficiency condensing furnaces (95%+ AFUE) usually pay off in Minnesota and qualify for utility rebates. Your installer can compare lifetime operating costs of the options for your actual usage.
Do smart thermostats really lower bills?
Yes — typically around 8% on heating and cooling, more if your schedule is away-heavy. In a Minnesota heating season that adds up quickly, which is why a professionally installed and configured smart thermostat is one of the fastest-payback upgrades.
How often should I change my furnace filter?
Basic 1-inch filters: every 1–3 months. Thicker media filters: every 6–12 months. Homes with pets or allergies should lean toward the shorter end. A clogged filter is the single most common cause of avoidable HVAC problems.
Part 5
Service & scheduling
How fast can a technician get to my home?
For no-heat or no-cooling emergencies, contractors in our network offer same-day and 24/7 service across Eagan and the south metro. Routine repairs and tune-ups are typically scheduled within 1–2 business days, and most inquiries get a callback within the hour during business hours.
What areas do you serve?
Eagan and the surrounding south metro, including Apple Valley, Burnsville, Rosemount, Inver Grove Heights, Mendota Heights, Lakeville, Savage, Prior Lake, Shakopee, Bloomington, and nearby communities.
Are the contractors licensed and insured?
Yes — every contractor we match you with is licensed, insured, and vetted for workmanship and professionalism before they ever visit a home.
When should I schedule seasonal maintenance?
AC tune-ups in spring before the first heat wave; furnace tune-ups in early fall before the first cold snap. Booking ahead of peak season means better appointment availability and catches problems before the weather stresses your system.
Go deeper
Detailed guides for every service
Each service page covers warning signs, what a pro will do, and service-specific questions.
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