Ductless mini-split installs in Douglas County
Strata Heat Pumps installs heat pumps in Douglas County, in every ZIP code listed on this page. The online estimate gives a price range and your rebates for an address in Douglas County in about two minutes.
Ductless mini-splits in Douglas County
Ductless mini-splits heat and cool without existing ductwork. They move heat instead of burning fuel. Census figures show that Douglas County has 140,542 homes, with a median build year of 2001. That is newer than Colorado's 1987 median. The county also has 74.1% detached houses, compared with 61.8% statewide. These homes are strong candidates for room by room heating and cooling, additions, and homes where extending ducts would be difficult.
Douglas County has 19.7% of homes in multiunit buildings, below Colorado's 26.9%. Ductless equipment suits condos and other homes without ducts. It also fits the county's 22.3% electric-heated homes. Gas remains the leading heat source at 73.9%, so many ductless projects add heating and cooling to selected rooms while a gas furnace remains in place. We measure the home and check the electrical panel before installation.
Douglas County homes by age and layout
Housing age shapes equipment selection. Homes built from 1980 to 1999 make up 39.7% of county housing, and 28.7% were built from 2000 to 2009. Another 24.3% were built in 2010 or later. A 1,500 square foot, one-story home with electric heat and no ducts has the same ductless estimate across these build groups: $11,800 to $19,200, $11,800 to $19,200, and $11,800 to $19,200 before rebates. Our estimate tool uses the home's details rather than build year alone for a final recommendation.
Earlier housing needs closer review. Homes built before 1960 account for 1.4% of Douglas County, versus 16.3% statewide. Homes from 1960 to 1979 account for 5.9%, versus 24.3% statewide. Older homes are more likely to lack ducts or have small ducts, which makes ductless indoor units a direct option. For the same 1,500 square foot electric-heated home without ducts, the estimates are $11,800 to $19,200 and $11,800 to $19,200 before rebates.
Ductless fit in Douglas County towns
Castle Rock has 27,824 homes, a median build year of 2006, and 18.4% in multiunit buildings. Parker has 22,340 homes, a 2003 median build year, and 25.8% in multiunit buildings. Highlands Ranch has 39,066 homes, a 1997 median, and 17.5% in multiunit buildings. These places combine newer detached homes with condos and attached homes, making ductless useful for additions, finished spaces, and homes without practical duct paths.
Lone Tree has 45.9% of homes in multiunit buildings, the county's highest town figure listed here, and 31.7% use electric heat. Meridian has 81.7% in multiunit buildings and 41.4% electric heat. Ductless systems suit these layouts because indoor units serve separate rooms without a central duct system. Acres Green has 99.4% detached homes and a 1975 median build year. Castle Pines has 81.2% detached homes and a 2003 median. Castle Pines Village has 87.3% detached homes and a 2001 median.
Franktown has 100% detached homes and a 1994 median build year. Grand View Estates also has 100% detached homes, with a 1981 median. Larkspur has a 1984 median and 19% of homes built before 1960. Louviers has a 1938 median, with 95.6% built before 1960. Perry Park has an even 2000 median build year and 87% detached homes. These older and detached-home patterns call for room-by-room load measurements, especially where ductwork is absent or undersized.
Roxborough Park has 97.2% detached homes and a 2001 median build year. Sedalia has 100% detached homes and 52.9% built before 1960. Sierra Ridge has 97.3% built in 2010 or later and 34.5% electric heat. Stepping Stone has a 2015 median, while Sterling Ranch has a 2017 median. Stonegate has a 1997 median, and The Pinery has 96.4% detached homes. Westcreek has 50% propane heat and 40.4% electric heat. Ductless can fit each of these home types after a site measurement.
Ductless mini-split prices by indoor unit count
Our estimate tool prices ductless work by indoor unit count. A one indoor unit system is $5,800 to $9,400 before rebates. A two indoor unit system is $8,800 to $14,300. A three indoor unit system is $11,800 to $19,200. Each indoor unit serves a zone, so the number of rooms to heat and cool drives the system layout. The estimate prices up to 5 indoor units before a custom quote.
A four indoor unit system is $14,800 to $24,100 before rebates. A five indoor unit system is $17,800 to $28,900. For reference, our settings use 500 sq ft of floor area per ductless indoor unit in the estimate. That is a starting point, not a substitute for measuring each room. A 1,500 square foot example home uses 3 indoor units, with an estimate of $11,800 to $19,200 before rebates and $7,800 to $15,200 after rebates.
The price includes the outdoor unit, wall-mounted indoor units, line sets, a standard 240V circuit, and permit. We check the electrical panel before work begins. Most installations take one day. Jobs with several ductless indoor units can take two or three days. Brands we install include Mitsubishi, Bosch, Daikin, Carrier and Trane.
Sizing at Douglas County elevation
We size for 1°F outdoors and 70°F indoors. Our sizing uses 5,300 ft, where an air-source unit loses 18% of heat output. At the design temperature, our settings use a coefficient of performance of 2. That local sizing matters because air-source units lose output at altitude and in deep cold. We measure the home, inspect duct conditions where ducts exist, and size equipment for the design temperature.
Build era changes the load in the 2,000 square foot, two-story gas-heated example. A home built before 1960 has a design load of 3.4 tons. Homes from 1960 to 1979 size at 3.2 tons. Homes from 1980 to 1999 size at 2.8 tons. Homes from 2000 to 2009 size at 2.4 tons, while homes built in 2010 or later size at 2.0 tons. Those differences show why square footage alone does not select a system.
Ductless is the right choice where independent room control and no ducts matter most. A ducted heat pump uses existing ducts to serve the whole home. At 2 tons, ducted pricing is $12,800 to $18,000, compared with $10,200 to $14,400 for dual fuel. At 3 tons, ducted pricing is $17,400 to $24,600, compared with $14,000 to $19,800. Dual fuel keeps a gas furnace for the coldest hours, while ductless uses indoor units instead of central ducts.
At 4 tons, ducted heat pump pricing is $22,100 to $31,200, while dual fuel pricing is $17,900 to $25,200. At 5 tons, the ranges are $26,800 to $37,800 and $21,700 to $30,600. For the 1980 to 1999 example, ducted pricing is $15,100 to $27,900 and dual fuel pricing is $12,100 to $22,500, before rebates. Ductless pricing for the separate 1,500 square foot, electric-heated home without ducts is $11,800 to $19,200. These are different home examples, so their prices should not be treated as direct like-for-like replacements.
Douglas County ductless rebates and filing
Our estimate tool applies the programs available in Douglas County. Xcel Energy customers replacing electric heat qualify for the Xcel Energy rebate of $750 per ton of heating on any of the three systems. Xcel Energy customers with a gas furnace, gas boiler, or propane qualify for $1,500 per ton of heating on any of the three systems. The State of Colorado Heat Pump Discount is $1,000 for every Colorado home. Power Ahead Colorado is $1,500 for homes in Douglas County on any of the three systems.
For a 3-ton ductless mini-split replacing electric heat, total rebates are $4,700. For a gas-heated home, total ductless rebates are $7,000. The gas and propane Xcel rule applies to a home that now heats with a gas furnace, gas boiler, or propane. We file every rebate for the homeowner. The Colorado state discount comes off the invoice. The federal 25C credit ended for systems installed after 2025-12-31.
Efficiency Works rebates do not apply here. Boulder County income-qualified rebates do not apply because this is Douglas County. Holy Cross Energy, Mountain Parks Electric, Gunnison County Electric, San Miguel Power, and Sangre de Cristo Electric rebates do not apply here. Our online estimate takes about two minutes, and a winter gas bill makes it more accurate.
Douglas County towns
| Homes | Median year built | Built before 1960 | Built 2010 or later | Gas heat | Electric heat | Propane | |
|---|---|---|---|---|---|---|---|
| Castle Rock | 27,824 | 2006 | 1.3% | 36.2% | 77.5% | 21.1% | 0.8% |
| Parker | 22,340 | 2003 | 0.9% | 25.8% | 75.9% | 22.3% | 0.8% |
| Highlands Ranch | 39,066 | 1997 | 0.5% | 10.5% | 74.8% | 22.8% | 1.1% |
| Lone Tree | 6,651 | 2003 | 0% | 34.8% | 64.5% | 31.7% | 2.6% |
| Acres Green | 1,068 | 1975 | 1% | 0% | 89.8% | 9.4% | 0% |
| Castle Pines | 4,628 | 2003 | 0.9% | 17.5% | 79.6% | 18.6% | 1.4% |
| Castle Pines Village | 1,796 | 2001 | 0.7% | 16.7% | 88.3% | 9.8% | 1.4% |
| Franktown | 130 | 1994 | 17.7% | 7.7% | 84.6% | 15.4% | 0% |
| Grand View Estates | 250 | 1981 | 6.8% | 12.4% | 78.3% | 21.7% | 0% |
| Larkspur | 79 | 1984 | 19% | 12.7% | 97.3% | 1.3% | 0% |
| Louviers | 136 | 1938 | 95.6% | 0% | 100% | 0% | 0% |
| Meridian | 2,783 | 2005 | 0.5% | 31.3% | 51.3% | 41.4% | 2.4% |
| Meridian Village | 1,000 | 2014 | 0% | 87.5% | 76.5% | 23.5% | 0% |
| Perry Park | 753 | 2000 | 3.5% | 12.6% | 89.3% | 8.3% | 1.4% |
| Roxborough Park | 3,618 | 2001 | 0.4% | 10.9% | 82.3% | 15.8% | 1.1% |
| Sedalia | 34 | 1938 | 52.9% | 0% | 100% | 0% | 0% |
| Sierra Ridge | 1,180 | -666666666 | 0% | 97.3% | 61% | 34.5% | 0% |
| Stepping Stone | 941 | 2015 | 3.2% | 91% | 70.4% | 26.4% | 3.1% |
| Sterling Ranch | 923 | 2017 | 0% | 94.6% | 78.4% | 16.7% | 1.4% |
| Stonegate | 3,276 | 1997 | 1.3% | 3.2% | 77.7% | 21.9% | 0% |
| The Pinery | 3,995 | 1995 | 1.5% | 12.2% | 81.4% | 14.5% | 2.8% |
| Westcreek | 137 | 1995 | 34.3% | 0% | 0% | 40.4% | 50% |
- Heat pumps in Castle Rock27,824 homes, median year built 2006.
- Heat pumps in Parker22,340 homes, median year built 2003.
- Heat pumps in Highlands Ranch39,066 homes, median year built 1997.
- Heat pumps in Lone Tree6,651 homes, median year built 2003.
- Heat pumps in Acres Green1,068 homes, median year built 1975.
- Heat pumps in Castle Pines4,628 homes, median year built 2003.
- Heat pumps in Castle Pines Village1,796 homes, median year built 2001.
- Heat pumps in Meridian2,783 homes, median year built 2005.
- Heat pumps in Meridian Village1,000 homes, median year built 2014.
- Heat pumps in Perry Park753 homes, median year built 2000.
- Heat pumps in Roxborough Park3,618 homes, median year built 2001.
- Heat pumps in Sierra Ridge1,180 homes, median year built -666666666.
- Heat pumps in Stepping Stone941 homes, median year built 2015.
- Heat pumps in Sterling Ranch923 homes, median year built 2017.
- Heat pumps in Stonegate3,276 homes, median year built 1997.
- Heat pumps in The Pinery3,995 homes, median year built 1995.
More for Douglas County
- Ducted heat pump in Douglas CountyPrices by home age and the Douglas rebates for this system.
- Dual-fuel heat pump in Douglas CountyPrices by home age and the Douglas rebates for this system.
- Heat pump rebates in Douglas County$7,000 on a 3-ton gas home, program by program.
- Pool heat pumps in Douglas CountyPool and spa heat pumps: local code rules, running cost and the swim season.
Questions we hear
Are ductless mini-splits a good fit for Douglas County homes?
Yes. Douglas County has 140,542 homes, and 74.1% are detached houses. Ductless systems fit homes without ducts, additions, condos, and rooms needing separate temperature control. The county also has 19.7% of homes in multiunit buildings. We measure the home and check the electrical panel before selecting equipment.
How are ductless mini-splits sized in Douglas County?
We size equipment for 1°F outdoors and 70°F indoors. Our sizing uses 5,300 ft, where an air-source unit loses 18% of output. The estimate starts with 500 sq ft per ductless indoor unit. We then measure the home because room layout, insulation, and the design temperature determine the final equipment selection.
What does a ductless mini-split cost by number of indoor units?
A one indoor unit ductless system is $5,800 to $9,400 before rebates. A three indoor unit system is $11,800 to $19,200, and a five indoor unit system is $17,800 to $28,900. The price includes the outdoor unit, wall-mounted indoor units, line sets, a standard 240V circuit, and permit. Systems beyond 5 indoor units need a custom quote.
Which rebates apply to ductless mini-splits in Douglas County?
Electric-heated Xcel Energy homes can receive $750 per ton of heating. Xcel customers replacing gas, gas boiler, or propane heat can receive $1,500 per ton of heating. Every Colorado home qualifies for the $1,000 State of Colorado Heat Pump Discount. Douglas County homes also qualify for $1,500 from Power Ahead Colorado. We file every rebate, and the state discount comes off the invoice.
How does ductless compare with ducted heat pumps and dual fuel?
Ductless uses wall-mounted indoor units and does not require central ducts. Ducted heat pumps use existing ducts for whole-home distribution. Dual fuel retains a gas furnace for the coldest hours. At 3 tons, ducted pricing is $17,400 to $24,600 and dual fuel pricing is $14,000 to $19,800. A three indoor unit ductless system is $11,800 to $19,200 before rebates.