How accurate are the material takeoff and cost calculations?

Calculations are grounded in industry-standard engineering formulas (such as compacted density multipliers, ASTM standards, and CSI MasterFormat divisions), with customizable local material unit costs and compaction waste factors.

What waste allowance factor should be added to material orders?

For commercial and residential trade installations, standard engineering practice recommends including a 5% to 10% material waste and compaction contingency factor.

Can I export these takeoff sheets for client bidding?

Yes, you can export full itemized material schedules and bid breakdowns directly to CSV or printable takeoff summaries.

Aquatic Thermal Thermodynamics

Pool Heat Pump vs Gas Heater Sizer

Extend your swimming season into spring and fall. Compare high-COP electric pool heat pumps against 400k BTU gas heaters and calculate monthly utility operating costs.

Pool Dimensions & Target Temp

Pool Volume (Gallons)

Pool Surface Area (Sq Ft)

Desired Water Temp (°F)

Avg Ambient Air Temp (°F)

Solar Blanket Cover Used?

Electricity Rate ($/kWh)

Operating Economics

Heat Pump (Mo) $185 COP 5.5 electric

Gas Heater (Mo) $440 Natural gas 84% eff

Monthly Savings $255 Heat pump advantage

Recommended HP 135k BTU Electric inverter unit

Heat-Up Time 1.2 °F/Hr Rate of temperature rise

Winner HEAT PUMP 58% cheaper to run

Need Chemical Shock & Sanitizer Dosing?

Warmer pool water accelerates chlorine burnoff and algae growth. Calculate chemical adjustments.

Chemical Dosing

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