HVAC Maintenance & Replacement Planning

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Calculate an entered utility bill reduction and simple payback, or compare observed bill averages without assuming what caused the change.

Estimate heating and cooling electricity from documented thermal loads, equivalent seasonal hours, seasonal efficiency ratings and an entered tariff.

Compare the same entered heating demand using explicit equivalent full-load hours, seasonal heat-pump efficiency, furnace AFUE, tariffs and other annual costs.

Build an installed quote, compare lifetime costs and calculate material packs. Separate payment-day cash from later reimbursements using your project records.

Estimate appliance kWh and cost by day, week, average month, current calendar month, and year, with an optional regional CO₂ factor.

Calculate water use from meter readings or measured fixture activity, compare daily averages and estimate variable charges using your actual rate.

Calculate emissions from your activity quantities and documented factors. Record units, sources and boundaries, then save, restore or export.

Compare documented total and sensible cooling loads with matched equipment capacities and show the implied latent differences.

Calculate EER, COP and kW per ton from matched cooling output and input, or retain separately documented seasonal and full-load ratings.

Compare a documented blower airflow and external-static point with the stated design airflow band and pressure limit, retaining signed margins.

Calculate geometric duct area, check actual clear-dimension velocity and reconcile fan pressure, component losses and an equivalent duct path.

Calculate CFM from an explicit air-change target or sensible load, then compare design and measured room airflows without hiding individual deficits.

Calculate service dates from documented intervals or compare actual runtime readings with a service threshold, then save and export the record.

Total entered assembly heat losses, sensible outdoor-air loss and explicit additional loads for a documented heating subtotal.

Compare a documented design heating load with actual equipment output at the same relevant design conditions, retaining the source for both.

Compare actual filter MERV ratings and measured or published pressure drops at one airflow against an assessed filter allowance.

Build a complete monthly household plan with annual bills and savings, or follow dated transactions to find early shortfalls and extra opening cash needs.

Compare zone heating and total, sensible and latent cooling loads with allocated indoor capacity and simultaneous outdoor performance.

Total a documented base charge, manufacturer-specific line allowances and explicit adjustments, keeping the exact system and refrigerant with the case.

Calculate DC path drop or approximate single-phase and balanced three-phase AC drop using actual conductor data, circuit current and a chosen limit.

Compare complete daily temperature profiles or test explicit heating and cooling cost changes, recurring fees, upfront cost and simple payback.

Normalize comparable duct pressure-test records or model sensible transfer and electric cost using separately supported operating leakage assumptions.

Calculate ACH from documented flow and volume while keeping operating outdoor or supply airflow separate from a stated pressure-test result.

Model a daily moisture mass balance from dry-air flow and humidity ratios, then compare assessed removal needs with documented equipment capacity.