Heating & Cooling in Cottage Grove, MN

Central Minnesota Heating and Cooling serves Cottage Grove and the rest of Washington County, about 19 miles from downtown Minneapolis. We repair and replace furnaces, central air, heat pumps, boilers and ductless mini-splits, and we're open 7 days, 7am–9pm. Call 612-429-3465.

A flat $79 trip charge, waived when you approve the repair. Written price before any work; same prices in every town we serve. Installed prices are on our pricing page.

Fairly common. Builders often sized equipment by square footage with a generous margin, so furnaces and condensers can be larger than the house needs. Oversized equipment short-cycles: quick blasts of heat, uneven rooms, and an AC that cools without drying the air. When it's time to replace, we run a Manual J on the actual house and often end up a size smaller.

In a split-level, usually yes. The low stage runs longer and quieter, which moves air to both levels more evenly and softens the warm-upstairs, cool-downstairs swing that single-stage units make worse. Paired with a variable-speed blower, the same equipment helps in summer too. For a small rambler with simple ductwork, a single-stage furnace is often enough.

Usually a gas unit heater hung from the ceiling, with a gas line trenched from the house and a circuit for the fan. National cost guides such as HomeGuide put an installed natural gas garage heater at $500–$2,000 or more and a new gas line at $350–$2,000. A separated-combustion model that draws its air from outside suits a space with cars and fuel cans. Insulating the walls and door first lets a smaller heater do the job.

With the whole house, not one unit. Farmhouses often grew in pieces, so the original basement furnace may feed only part of the house while a later wing runs on baseboard or a wall heater and a porch has nothing. We map what heats each area, check the fuel supply and venting, then build one plan from a load calculation. Sometimes a ductless heat pump for the addition beats extending old ductwork.