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Air Conditioning Installation & Replacement in Lamar, CO

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Reliable cooling for Southeast Colorado summers, sized for your home and installed by a local crew. Call (719) 336-9111 for an estimate.l

Air Conditioning Installation & Replacement

In a region where July highs average in the mid-90s and triple digits are common, your air conditioner is essential equipment. Evergreen Electrical & Mechanical installs and replaces central air conditioners, heat pumps, ductless mini-splits and commercial rooftop units across Prowers County and Southeast Colorado. Because we're electricians, the circuit, disconnect and controls are done right as part of the same job.

Signs it's time to replace your air conditioner

  • The system is more than 10–12 years old
  • It uses R-22 refrigerant and needs a recharge or major repair
  • The compressor has failed
  • Summer power bills keep rising
  • The house won't stay cool on the hottest afternoons
  • You've needed several repairs over the last few seasons

Cooling systems we install

  • Central air conditioners. Paired with your existing furnace and ductwork for whole-home cooling.
  • Heat pumps. One system cools in summer and heats in winter. Cold-climate models keep heating well into single-digit temperatures.
  • Dual-fuel systems. A heat pump paired with a gas or propane furnace for backup in the deep cold.
  • Ductless mini-splits. For homes without ducts, additions, garages, shops and offices.
  • Commercial rooftop and split systems. For offices, clinics, retail and ag buildings.

We aren't tied to one manufacturer. We install and service equipment from many leading brands, so we can recommend the system that fits your home and budget.

Sized right for High Plains heat

An oversized air conditioner cools the house fast, then shuts off before it removes humidity. That on-and-off cycling also wears out the compressor sooner. An undersized unit runs all afternoon and still can't keep up. We size each system with a cooling-load calculation for your home. It accounts for square footage, insulation, windows, sun exposure and ductwork. We also check that your ducts can carry the airflow the new system needs.

New refrigerant standards: what to know

Since January 1, 2025, new residential air conditioners and heat pumps must use lower-impact refrigerants, mainly R-454B or R-32. They replace the R-410A used for the past 15+ years. These new refrigerants are not drop-in replacements, so an old outdoor unit can't be paired with a new indoor coil, or the other way around. The indoor coil, outdoor unit and refrigerant lines need to be designed to work together. We install complete matched systems built for the current standard.

The electrical side is built in

New AC systems and heat pumps often need a different circuit size than the old unit. We install the correct breaker, wiring and outdoor disconnect, and we make sure your panel can handle the load. We can also add a whole-home surge protector to protect the new compressor and control boards from summer storm surges.

How AC replacement works

  • In-home estimate. We inspect your current system, ductwork and electrical service, and talk about your comfort and budget goals.
  • Load calculation and options. We size the system and give you a written quote with clear options.
  • Permits and scheduling. We pull any required permits and schedule the install. Most straight replacements take one day.
  • Installation. We recover the old refrigerant and remove the old equipment. Then we set the new outdoor unit, install the matched indoor coil and line set, and wire the system.
  • Startup and testing. We pressure-test and evacuate the lines, then verify the refrigerant charge, airflow and temperature drop.
  • Walkthrough. We show you how to use the thermostat and register your warranty.

Replacing your furnace too?

If your furnace is also near the end of its life, replacing both at once saves on labor and gets you a matched system. See furnace installation and replacement.

AC installation across Southeast Colorado

We're based at 518 N Main St in Lamar and install air conditioning for homes, farms and businesses throughout Southeast Colorado.

Ready for a new AC or heat pump?

Ready for a new AC or heat pump? Call Evergreen Electrical & Mechanical at 719-336-9111 or request service online.

Request Service

Frequently Asked Questions

Most central air conditioners last about 12 to 15 years with regular maintenance. Dust, heat and storms in Southeast Colorado can shorten that, so annual tune-ups matter here.

Most straight replacements are done in one day. New installs that need ductwork, a new circuit or a panel upgrade can take longer, and we'll tell you up front.

A heat pump cools just like an AC and also heats your home efficiently for much of the winter. Many Southeast Colorado homes pair one with a gas or propane furnace for the coldest nights. We'll compare both options for your home.

Usually not. New systems use different refrigerants than older ones, so the outdoor unit, indoor coil and refrigerant lines need to match. Installing a matched system protects your efficiency and your warranty.

We're based in Lamar and serve homes, farms and businesses throughout Southeast Colorado.