Appliance Repair or Replace Calculator
Enter the repair quote, likely added life, replacement cost, and annual energy or water cost. The calculator compares both choices over the replacement appliance lifespan in present dollars.
RecommendationReplace
- Present cost of repairing
- $2,485.46
- Present cost of replacing now
- $2,295.86
- Savings from recommended choice
- $189.60
- Maximum worthwhile repair quote
- $260.40
- Minimum life repair must add
- 6.85 years
- Annual operating-cost savings after replacement
- $60.00
Assumes replacement prices and annual operating costs stay constant in inflation-adjusted dollars.
How to use this calculator
- Enter the full repair quote, including diagnostic charges, tax, parts, and labor.
- Estimate how many more years the current appliance is likely to last after the repair.
- Enter the replacement price, installation, disposal, and any rebate or purchase credit.
- Add the expected replacement lifespan and the annual operating cost for the old and new appliance.
- Use a real discount rate to compare future costs with money spent today.
How the repair or replace comparison works
This calculator treats the choice as a life-cycle cost problem. It compares the present cost of repairing the old appliance, using it for the added repair life, and then replacing it later with the present cost of replacing it now. The common study horizon is the expected life of the replacement appliance.
Let R be the repair quote, m the repair life in years, N the replacement life, and r the real discount rate. The net installed replacement cost is K = max(0, price + installation + disposal - rebate). The old and new annual operating costs are O_old and O_new.
The discount factor is DF(t) = (1 + r)^-t. The annuity factor is AF(t) = [1 - (1 + r)^-t] / r when r is above zero, and AF(t) = t when the discount rate is zero.
Replacing now costs C_replace = K + O_new x AF(N). Repairing costs C_repair = R + O_old x AF(m) + K x DF(m) + O_new x [AF(N) - AF(m)] - [K x (m / N)] x DF(N). The final subtraction is the modeled residual value at year N of a replacement bought in year m.
What moves the answer most
The repair quote and the added life from the repair usually move the recommendation most. A high repair quote needs either a long added life, a very expensive replacement, or large operating savings from waiting. A newer, more efficient appliance can make replacement stronger when annual energy or water savings are meaningful.
The discount rate also matters. A higher real discount rate gives less weight to costs paid in later years, which can make delaying replacement more attractive. If the repair life entered is longer than the replacement life, the calculator caps it at the common horizon so both choices are compared over the same period.
What this calculator leaves out
The model includes only the amounts entered here. It does not separately estimate future breakdowns, financing charges, tax differences, warranty coverage, downtime, food loss, water damage, delivery delays, or the inconvenience of scheduling service. It also assumes real operating costs stay level and that a future replacement costs the same as today's replacement in inflation-adjusted dollars.
Worked example
Suppose the repair quote is $450 and the repair is expected to add four years. A replacement costs $1,200, delivery and installation are $150, disposal is $50, and there is no rebate, so the net installed replacement cost is $1,400. The replacement is expected to last 12 years, the old appliance costs $150 per year to operate, the new one costs $90 per year, and the real discount rate is 3%.
With those inputs, replacing now has a present cost of about $2,295.86. Repairing has a present cost of about $2,485.46 because the repair quote and four years of higher operating cost outweigh the value of delaying replacement. The recommendation is replace, with about $189.60 of present-cost savings. The maximum worthwhile repair quote is about $260.40, and the repair would need to add about 6.85 years to break even at the entered quote.
Common questions
When is an appliance too old to repair?
An appliance is often too old to repair when the quote is high and the repair is unlikely to add much reliable life. This calculator makes that tradeoff explicit by comparing the repair quote, added life, operating cost, and replacement timing over a shared horizon.
What costs should be included in a replacement estimate?
Include the appliance price, delivery, installation, required hoses or cords, cabinet or vent modifications, permit charges, haul-away, and disposal. Subtract only rebates or credits you reasonably expect to receive.
How do I estimate the useful life added by a repair?
Ask the technician whether the repair addresses normal wear, an isolated part failure, or a symptom of broader age-related decline. Use a shorter added life when the appliance has multiple worn components, rust, leaks, control-board issues, or a history of repeat service calls.
Where can I find an appliance's annual energy cost?
For many new appliances, the yellow EnergyGuide label gives an estimated yearly energy cost under standardized assumptions. Use that value as a starting point, then adjust for local utility rates, water costs, and your household usage when those differ materially.
What is the 50 percent appliance repair rule?
The 50 percent rule says a repair is suspect when it costs more than half the price of a comparable replacement. It is a quick screen, not a full analysis, because it ignores remaining life, operating-cost differences, rebates, installation, and the time value of money.
Why does the calculator include residual value?
If you repair now and buy the replacement later, that later replacement still has unused life at the end of the study horizon. The residual value gives credit for that remaining service life so repairing is not unfairly penalized for shifting the replacement purchase later.