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Infern-O-Therm Stack Economizer Savings Calculator

No-Obligation Plant Evaluation
Thinking of an upgrade? Batches not mixing right? Aging equipment? We'll come to your site and do a thorough analysis, then present a report you can use for planning and implementation.
BTU Savings Fuel Savings
Return On Investment* Cost Savings
*Estimate only. We can provide a custom analysis tailored to your operation. Email us.
View actual combusion analyzer tickets showing efficiency increase from 74.4% to 91.1%.
Video: Bob Giannetti talks about the Stack Economizer   •  Visit the Infern-O-Therm Web site.

Infern-O-Therm Stack Economizer Savings Calculator

If you are not using an energy recovery device to reclaim heat from the exhaust on your oil- or gas-fired hot water tank, you're using too much fuel! As fuel prices continue to rise, the case for such devices keeps getting stronger. To see how quickly the Infern-O-Therm Stack Economizer can harness waste heat to pay for itself, change the default numbers below to match your business and click the "Calculate" button.

Assumptions: 1. Oil = 138,500 BTU per gallon
2. Propane = 91,500 BTU per gallon
3. Natural gas = 1,000 BTU per cubic foot
4. 8-hour work days, 5 days per week.
During the heating season, how many yards per day do you average? yards
How many gallons of water do you use per yard of concrete? gallons
How many weeks long is your water heating season? weeks
What is the average temp of your source water during heating season? degrees F
What is your target hot water temperature? degrees F
Infern-O-Therm Stack Economizer  
What is your installation labor cost? (Figure 2 men for 2 days.)  
Are there any additional costs? If so, enter them here.  
 
  Fuel Type    
  #2 Fuel Oil*    $/gal.
  Propane $/gal.
  Natural Gas $/1000 cu.ft.