Editor In Chief

Estimate the monthly cost to run a home HVAC system based on home size, system efficiency, daily runtime, electricity rate, and climate severity.

Estimate HVAC installation cost and cost per square foot based on home size, system type, installation complexity, regional labor factor, and ductwork needs.

Estimate HVAC labor cost based on job hours, technician count, hourly rate, system complexity, and regional labor adjustment.

Estimate an HVAC labor billing rate based on technician base wage, overhead burden, experience level, job complexity, and local market conditions.

Estimate the selling price for an HVAC job by applying markup to equipment and materials, adding labor cost, and adjusting for project complexity and overhead.

Estimate HVAC job profit margin based on total revenue, labor cost, materials cost, overhead allocation, and job complexity. Use this calculator to understand how direct costs and complexity-adjusted overhead affect profit margin percentage on installation or service work.

Estimate HVAC installation pricing based on home size, system type, efficiency rating, ductwork needs, and regional labor costs.

Estimate your monthly HVAC financing payment based on system cost, down payment, loan term, APR, and optional installation add-ons.

Estimate your monthly HVAC loan payment based on equipment and installation cost, down payment, interest rate, and loan term.

Estimate how many years it will take for an HVAC upgrade to pay for itself based on installation cost, rebates, current annual energy costs, expected energy savings, and annual maintenance savings.

Estimate the installed cost of a new HVAC system based on home size, system type, efficiency level, ductwork needs, and regional labor/material pricing.

Estimate the installed cost to replace a residential HVAC system based on home size, system type, efficiency rating, installation complexity, and regional labor pricing.

Estimate the installed cost of a new HVAC system based on home size, system type, efficiency rating, ductwork needs, and labor market conditions.

Estimate the installed cost of a new HVAC system based on home size, system type, efficiency, ductwork needs, and regional labor costs.

Estimate the installed cost range for a commercial HVAC project based on building size, system type, efficiency level, installation complexity, and ductwork needs.

Estimate the installed cost to replace both a furnace and central air conditioner based on home size, system efficiency, installation complexity, and regional labor pricing.

Estimate the cost of HVAC repair based on service type, system age, labor hours, urgency, and parts cost. This calculator provides a realistic repair cost range using common HVAC pricing factors.

Compare estimated near-term HVAC repair costs against replacement costs using system age, repair estimate, efficiency, and home size factors to help decide whether repairing or replacing may be more cost-effective.

Estimate the cost of routine HVAC maintenance based on system type, home size, number of units, service frequency, and regional labor rates.

Estimate annual HVAC operating cost based on home size, energy usage, electricity rate, system efficiency, and climate demand.

Estimate HVAC duty cycle as the percentage of time a heating or cooling system runs during an observation period based on total runtime and cycle behavior.

Calculate refrigerant superheat by subtracting the saturated evaporator temperature from the measured suction line temperature. This helps verify proper refrigerant charge and evaporator performance in HVAC systems.

Calculate refrigerant subcooling by subtracting the measured liquid line temperature from the condensing saturation temperature. This helps evaluate whether a refrigeration or air conditioning system has the proper liquid refrigerant cooling below saturation.

Calculate either superheat or subcooling from measured refrigerant temperatures and pressures. Enter the saturated temperature corresponding to the measured pressure along with the actual line temperature to find the temperature difference.

Estimate the air conditioning temperature split by subtracting the supply air temperature from the return air temperature. This helps evaluate basic cooling performance across the evaporator coil under typical operating conditions.

Calculate the sensible heat ratio (SHR) for an HVAC process using sensible cooling load and latent cooling load. SHR indicates the fraction of total cooling devoted to sensible heat removal.

Calculate the specific enthalpy of moist air for HVAC applications using dry-bulb temperature, relative humidity, and altitude. The result estimates air enthalpy in BTU/lb of dry air based on standard psychrometric relationships.

Estimate seasonal heating output and electricity use for a heat pump using HSPF, heating capacity, runtime, and electricity rate. HSPF is the total seasonal heating output in BTU divided by total electricity input in watt-hours.

Estimate HVAC electricity use in kilowatt-hours based on system power, daily runtime, seasonal usage, equipment efficiency, and climate demand.

Estimate daily HVAC runtime based on system capacity, average electrical draw, thermostat setpoint difference, outdoor climate severity, and home insulation quality.