How much does a 3-Ton (36,000 BTU) heat pump cost to run per month in Montana?

In Montana (13.5¢/kWh), a 3-Ton (36,000 BTU) cold-climate heat pump serving a 1,650–2,100 Sq Ft home consumes approximately 6,370 kWh per year, costing $860/year or $72/month on average.

3-Ton (36,000 BTU) Heat Pump & AC Monthly Electricity Cost in Montana (2026)

3-Ton (36,000 BTU) Annual kWh Consumption & Operating Cost

Equipment Output Capacity:3-Ton (36,000 BTU)/hr

Typical Home Coverage Area:1,650–2,100 Sq Ft

Estimated Annual Electricity Usage (COP 3.1 / 18 SEER2):6,370 kWh/yr

Annual Heating & Cooling Utility Bill in Montana:$860/yr ($72/mo)

Average Net Installed Equipment Cost (2026):$6,800

15-Year Total Cost of Ownership (Install + 15 Yrs Bills):$19,700

Model This 3-Ton Unit in Montana → Verify Exact Room/House BTU Load →

💰 Up to $2,600 Rebate

Compare 3 Local Montana HVAC Installer Quotes

Verify 2026 Federal 25C Tax Credit & NorthWestern Energy rebate eligibility and compare turnkey contractor pricing for a 3-Ton system (2,000 sq ft).

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DIY Pre-Charged Ductless Mini-Split Kits

Avoid $3,500+ in ductwork labor. Calculate exact multi-zone mini-split BTU capacity for your 2,000 sq ft Montana home.

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☀️ Offset 13.5¢/kWh

Montana Solar + Heat Pump Net-Zero Calculator

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Compare Other HVAC Tonnage Sizes in Montana

1.5-Ton (18,000 BTU)2-Ton (24,000 BTU)2.5-Ton (30,000 BTU)3-Ton (36,000 BTU)4-Ton (48,000 BTU)5-Ton (60,000 BTU)