Ductless Mini-Split Installation in Castle Rock

In historic houses, wall space is often taken by tall windows, original trim and built-ins. Floor consoles fit under windows, ceiling cassettes work where there's attic space above, and a small ducted air handler can serve two upstairs bedrooms from a closet. Each indoor unit is sized to its room, since an oversized one cycles on and off and leaves summer air damp.

We avoid drilling through original exterior details and route line sets through framing wherever possible, finishing exterior runs in covers painted to match.

Founders Village has a median build year of 1997, with split-levels and two-stories. The typical complaints are a cool lower level and a warm upper floor. A single head on the problem level gives it its own thermostat, and the furnace and AC keep serving the rest of the house.

The Meadows is one of the large master-planned communities, and Terrain has newer construction. These homes are ducted, so mini-splits typically serve bonus rooms, finished basements or home offices. Both communities have design guidelines, so get HOA approval for the outdoor unit location first. If your Terrain home is still under construction, Power Ahead Colorado won't apply until it's complete.

Castle Rock sits around 6,224 feet, and Douglas County's heating design temperature is 4°F. We use the manufacturer's altitude data rather than nameplate capacity, size each head from a room-by-room load, and choose cold-climate models with published output at 5°F.

Outdoor units go on stands above drifting snow, away from roof edges. Inside, head condensate is piped to a household drain or lifted by a mini pump. In older homes we route line sets through closets or the attic where possible to keep exterior runs short and tidy.

The Town of Castle Rock Building Division handles permits through its eTRAKiT portal; addresses outside town limits go to Douglas County. We file and schedule the inspection. Electrical work means a dedicated 240-volt circuit plus a disconnect beside the condenser. Older Craig and Gould homes may have small panels, so we check before quoting a multi-zone system.

Black Hills Energy supplies gas and CORE Electric supplies power, so Xcel rebates don't apply. Black Hills' 2026 Colorado rebate form has no heat pump measure, and CORE lists no heat pump rebate on its efficiency page.

The town is a DRCOG member, so Power Ahead Colorado's $1,500 rebate can apply to cold-climate systems in existing homes when we submit before installation. The state's 2026 credit is $1,000 per qualifying system, with at least $333 discounted on the invoice. The federal 25C credit ended after 2025.