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Cold-Climate Heat Pump Check

Monthly heating cost at COP 2.2 vs resistance heater — honest per-kWh-heat comparison.

At −15°C a modern cold-climate unit still manages COP ~2 — half its mild-weather figure but double resistance heating. Model your coldest-month COP honestly; sizing for the design day decides backup needs.

₹2,182
Cold-climate ASHP monthly cost
Electricity used273 kWh/month
Resistance heater (at 100% efficiency)₹4,800/month
Monthly saving₹2,618
Effective heat price₹3.64/kWh-heat

A COP of 2.2 means each electrical unit delivers 2.2units of heat — the heat pump doesn't create energy, it moves it. The comparison divides resistance heater's fuel price by its efficiency for an honest per-kWh-of-heat contest.

Sources: Heat pump COP fundamentals; field-measured seasonal values

Indicative estimates only, not financial or investment advice. Tariffs, subsidies and net-metering rules change — verify with your DISCOM, utility or installer before committing.

Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.

Use the free Cold-Climate Heat Pump Check online — Monthly heating cost at COP 2.2 vs resistance heater — honest per-kWh-heat comparison. Runs instantly in your browser: no signup, no upload, mobile-friendly.

About Cold-Climate Heat Pump Check

At −15°C a modern cold-climate unit still manages COP ~2 — half its mild-weather figure but double resistance heating. Model your coldest-month COP honestly; sizing for the design day decides backup needs.

How to use Cold-Climate Heat Pump Check

  1. 1Enter your monthly heat need (help text gives typical values).
  2. 2Confirm the COP and your electricity tariff.
  3. 3Compare against the alternative fuel's monthly cost.

Why use Cold-Climate Heat Pump Check?

  • COP accounting: heat moved per unit of electricity bought
  • Honest comparator: rival fuel ÷ rival efficiency
  • System-typical COP defaults from field data, not brochures
  • Monthly money math for the payback conversation

Frequently asked questions

What does COP actually mean for my heating bill?+

Coefficient of Performance = heat delivered ÷ electricity consumed. COP 4 means each kWh you buy delivers 4 kWh of heat — the other 3 are pumped from outside air/ground for free. Your effective heat price becomes tariff ÷ COP: ₹8 electricity delivers ₹2/kWh heat.

Heat pump vs gas vs electric resistance — which is cheapest?+

Compare per kWh of HEAT: resistance = tariff (COP 1); gas = gas price ÷ ~0.9 efficiency; heat pump = tariff ÷ COP. At ₹8 power and COP 3.5, the heat pump delivers heat at ₹2.3 — beating most gas prices and demolishing resistance. This calculator runs your actual rates.

Do heat pumps work in very hot or very cold climates?+

Both, with caveats: cooling-dominated India is heat-pump natural territory (an AC IS one). For heating, modern cold-climate units hold COP ~2 at −15°C; ground-source sidesteps weather entirely via stable earth temperature. The system presets here carry climate-honest COPs.

Why is my real COP lower than the rated one?+

Ratings are lab points; seasonal reality includes defrost cycles, part-load behaviour, and your actual temperature lift. Field seasonal COPs run 15–25% under rated. Measure yours with the COP-from-bills approach: heat delivered (litres × ΔT × 1.16 Wh) ÷ metered kWh — the Cold-Climate Heat Pump Check accepts your measured figure.

Embed Cold-Climate Heat Pump Check on your website

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