Did you know?

Condensing boilers can achieve thermal efficiencies up to 98%. However, boiler efficiency is highly dependent on the return water temperature of your system and the percentage of the full load capacity that your system operates at.

How efficient is your boiler?

Use this calculator to estimate the mean boiler efficiency of your system given a return water temperature and percent load at different time intervals.

Unit Type

Operation Profile
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Estimate your boiler systems performance by defining the heating profile below. For example: during a 2,000 hour heating season, a boiler spends 1,000 hours operating at 40% of it's rated heating capacity, 500 hours at 50% and 500 hours at 90%.


75%
85%
60%
90%
Total Hours Running
4380
Return Water Temperature (°C)
Mean Capacity
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Mean Capacity (%) is the average boiler load over the operation period, expressed as a percentage of its maximum capacity.
0%
Estimated Seasonal Boiler Efficiency
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Mean Capacity (%) is the average boiler load over the operation period, expressed as a percentage of its maximum capacity.
0%
Did you know?

For many years, it was common practice for a constant-speed centrifugal pump to control the flow of a system with a control valve in the discharge line. This valve controls the flow delivered to the system. The valve takes a pressure drop equal to the difference between the pressure supplied by the pump and the pressure required by the system. However, this method wastes energy by creating an artificial pressure drop in the system and reducing pump efficiency.

A Variable Frequency Drive (VFD) would use only a fraction of pump energy compared to a system using a control valve with the same operating conditions.

How much energy will you save with a Variable Frequency Drive?

Estimate the electrical energy savings when retrofitting your pump or fan system with a Variable Frequency Drive (VFD).

Pump Power HP
Flow %
Hours per week
Weeks per year
Estimated Energy Consumption Savings 0%
Motor Load 0
Mean Percent Power 0
Did you know?

Matching your equipment size to the required demand can reduce energy and maintenance costs while improving comfort.

How much energy will you save with a Variable Frequency Drive?

Estimate the electrical energy savings when retrofitting your pump or fan system with a Variable Frequency Drive (VFD).

Unit Type

Total Air Flow L/s
Outside Air Flow %
Outside Air Temperature (°F)
Supply Air Temperature (°F)
Return Air Temperature (°F)
Mixed Air Temperature (°F)
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Mean Capacity (%) is the average boiler load over the operation period, expressed as a percentage of its maximum capacity.
0.0
Conditioned Air Energy Demand (°F)
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Mean Capacity (%) is the average boiler load over the operation period, expressed as a percentage of its maximum capacity.
0.0
Did you know?

A small exhaust fan left running at night can be easily overlooked, but you may be surprised by the energy cost of leaving it on. Use the ventilation calculator to determine the annual energy consumption and cost for heating ventilation air to space temperature.

                                       

How much is your ventilation system costing?

Use the ventilation calculator to determine the annual heating or cooling consumption and cost associated with providing fresh air to your space.

Energy Type

Unit Type

Location
System on Factor %
Air Flow L/s
AFUE %
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AFUE Annual Fuel Utilization Efficiency - is an estimate for the overall efficiency for fuel burning equipment. It typically 85% or greater for condensing heating systems, and 80% or less for non-condensing. Electric resistance is 100%, and heat pumps typically operate around 300% in the Vancouver area.
Utility Rate $/GJ
Estimated Annual Energy Cost
0.0
Estimated Annual Energy Consumption
GJ
 0.0
Did you know?

The calculator is a versatile energy management tool which accepts measured current, full load amps or rated horsepower inputs.

How much does it cost to operate electric motor for 1 year?

Estimate the energy consumption and cost for an electric motor using the known paratmeter: measured amps, or name plate data; full load amps (FLA) or horsepower (Hp or kW). Use Full Load Amps for fans and pump motors. This can be found on the motor nameplate.

Known Parameter

Measurable Units
Load Factor
Volts
Motor Efficiency
Phases
Power Factor
Hours Per Week
Weeks per Year
Electrical Rate ($ / kWh)
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Insert your local electrical rate here. Rates per kWh, or electrical consumption, can be found on your utility bills or your utility provider's website.
Motor Load
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Mean Capacity (%) is the average boiler load over the operation period, expressed as a percentage of its maximum capacity.
0.0
Consumption per year
 0.0
Cost per year
 0.0