11 · InstallationPlanned
HVAC Replacement Cost Calculator
A future location-aware replacement planner for US and Canadian homes.
Research and data validation in progressFree results · no email required
Home climate calculators.
Estimate cost, capacity and electricity use with every important assumption visible. Results come first; quote and product options are always optional.
01 · InstallationLive
Air Conditioning Installation Cost Calculator
Build a sourced UK budget range for equipment, labour, likely units and installation time.
Open calculator02 · Running costLive
Air Conditioning Running Cost Calculator
Estimate fixed split and multi-split electricity cost from rated input, inverter load, schedule and your UK tariff.
Open calculator03 · InstallationLive
Heat Pump Cost Calculator
Combine an installer figure, separately quoted upgrades and current grant amounts into a transparent UK project budget.
Open calculator04 · ComparisonLive
Heat Pump vs Gas Boiler Cost Calculator
Compare quotes and annual running costs using your heat demand, tariffs, SPF, boiler efficiency and gas-connection choice.
Open calculator05 · ComparisonLive
Heat Pump Quote Checklist
Compare two or three written quotes for price, design, scope, support and consumer-protection gaps without uploading the documents.
Open calculator06 · InstallationLive
Boiler Replacement Cost Calculator
Combine a written gas-boiler quote with separately priced controls, radiators, cylinder, flue, utility and making-good work.
Open calculator07 · ComparisonLive
Boiler Quote Checklist
Compare two or three boiler quotes for price, Gas Safe details, equipment, controls, compliance, warranty and written-scope gaps.
Open calculator08 · SizingLive
Air Conditioner BTU / Room Size Calculator
Turn room dimensions, glazing, sun, insulation and occupancy into a transparent BTU and kW range.
Open calculator09 · Running costLive
Portable Air Conditioner Running Cost Calculator
Use appliance wattage, your tariff and real operating time to estimate hourly, daily and seasonal cost.
Open calculator10 · Running costLive
Dehumidifier Running Cost Calculator
Calculate session, weekly, monthly and annual electricity cost with an optional duty-cycle assumption.
Open calculator12 · SizingLive
Dehumidifier Size Calculator
Compare extraction-capacity bands from room volume, moisture load and temperature.
Open calculator13 · Running costPlanned
Heating Running Cost Calculator
Compare energy use and editable tariffs without claiming a universal current rate.
Research and data validation in progress14 · EfficiencyPlanned
Insulation Savings Calculator
Model a range of potential savings while keeping survey assumptions visible.
Research and data validation in progressOur calculator rule
A useful answer should not cost you your contact details.
We show the result free, explain the model and keep uncertain local prices out until the evidence is ready. An estimate is never presented as a contractor quotation.
How our calculator models work →