4-U Electric & HVAC
All HVAC Services

Service & Repair

Fast, honest diagnostics for furnaces, central AC, and mini-splits across the Twin Cities. Most common parts stocked on the truck so a same-visit fix is realistic, and 24/7 emergency dispatch when the furnace quits at -20°.

What We Offer

Furnace diagnosis and repair

Ignitors, flame sensors, inducer motors, capacitors, gas valves, and control boards. We diagnose with meters and combustion analyzers, not by swapping parts.

Central AC diagnosis and repair

Warm air, short cycling, frozen coils, and failed capacitors. We track down refrigerant leaks before we add refrigerant, so the fix sticks.

Mini-split service

Error codes, failed condenser fans, and refrigerant-line leaks on cold-climate systems (Mitsubishi, Fujitsu, Daikin, LG).

Annual tune-ups

Fall furnace tune-up (combustion analysis, ignition check, heat-exchanger inspection) and spring AC tune-up (refrigerant charge, coil clean, capacitor test).

24/7 emergency dispatch

Loss-of-heat in winter and gas-related calls are top priority. We confirm the diagnostic dispatch fee before we roll a truck.

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Service & Repair
Why It Matters Here

When the furnace quits at -20°

A dead furnace on a cold Minnesota night is not a "call us tomorrow" problem. We diagnose gas and electric furnaces, central AC, and mini-splits, and we stock the most common inducer motors, ignitors, capacitors, and control boards on the truck so a same-visit fix is realistic.

HVAC Questions

Frequently Asked Questions

Common questions about service & repair in the Twin Cities metro. Don't see yours? Call us at 763-301-4829.

Yes, across the Twin Cities metro. In a Minnesota winter, a no-heat call from us is treated as urgent, same as a no-power call. We confirm the diagnostic dispatch fee before we roll and prioritize loss-of-heat and gas-related calls.
Age and repair cost are the two big factors. Under 10 years old and a minor repair (ignitor, capacitor, flame sensor) is almost always a repair. Over 15 years old with a heat exchanger crack, a failed inducer plus a control board, or a repair cost over 40% of replacement usually tips toward replacement, especially with Xcel and CenterPoint rebates available for new high-efficiency units.
Most often a frozen evaporator coil (from a dirty filter or low refrigerant), a tripped outdoor disconnect, a failed capacitor, or low refrigerant from a slow leak. We diagnose before we add refrigerant: topping off a leak is a short-term fix that costs you the same refrigerant next summer.
Furnace: once a year in early fall. AC: once a year in spring. Mini-splits: clean the indoor filters every 1 to 3 months yourself, professional service every year. A tuned system uses 10 to 15% less energy and breaks down less often.

Still have questions? We're happy to help!

Call us at 763-301-4829

Ready to Get Started?

Contact us for a free estimate on your service & repair project. Licensed in Minnesota (EA807270).

Schedule Service Call 763-301-4829