 | Boilers vs heaters - space + water heating |
|
|
Question: Boilers vs water heaters I'm looking at the design of a combined space and water heating system. My heater/boiler was sized at 80,000 Btuh but the minimum total load 49,330 - according to the CA Title 24 prog Micropas 6 - very messy output! Could it be that the efficiency was considered 62%? The input will be propane, possibly with a loop to a pellet stove boiler. I seen several references suggesting that the boilers were much more efficient - like 15-20% but that the cost is much much higher. Comments on the heater vs boiler issue would be appreciated and on brands that are reliable and good value for hard earned dough
Answer: Get a boiler that has an indirect for combined space heating and potable heating. If you get one that has a modulating burner, you could have minimal output. Efficiency is the heating factor of the appliance, not the minimum load. For instance if the input is 100K and the full output is 92K, you have a 92% efficient appliance. You have to pay more up front for the higher efficiency, but the long term payback will more than make up the difference.
|
 |
|
| |
Submit Your Question
Home