- Mar 10, 2011
- 192
Anyone have a link for a good calculator to determine the Right size BTU for a Gas Heater?
Thanks,
Dan
Thanks,
Dan
simicrintz said:X2 to Bama's post. Bigger is better for pool heaters (and filters).
Well, yea thats pool industry dogma, sure. You'll find a lot of TFP doesnt follow industry dogma that may or may not be suspect.racket said:Most 24' pools use somewhere around a 125-200k heater.
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racket said:No that is properly sizing equipment for the task.
Red Shirt Ensign said:Electricity is very cheap in Cleveland, OH but the weather would be prohibitive to a heat pump
I paid .114 per KWH last month alone
Nat Gas is 6.60 per MCF with del charges last month it was 11.08 per MCF total charge
Are these heaters on/off or do they work as a thermostat would?
simicrintz said:I agree with bk. I have never sold anything smaller than a 400k heater, even on a spa only. Why wait any longer for something to heat up than you have to? You will use whatever gas is needed to heat to the temp you decide, so a smaller heater only prolongs the heating and uses gas for a longer period of time.
Go 400k and be done. You'll be happy you did.
bk406 said:Red Shirt Ensign said:Electricity is very cheap in Cleveland, OH but the weather would be prohibitive to a heat pump
I paid .114 per KWH last month alone
Nat Gas is 6.60 per MCF with del charges last month it was 11.08 per MCF total charge
Are these heaters on/off or do they work as a thermostat would?
Ok, 1 therm is 100 cubic feet. So you pay about a $1.10 per therm.
Lets do the math.
It's a bit hard to figure since a heat pump puts out variable BTU's depending on ambient conditions. But for this example we can use 100,000 BTU.
A Heat pump will cost ~ $0.70-80 per 100,000 BTU
Natural gas ~ $1.10 per 100,000 BTU.
A heat pump is about 30 cents cheaper. But in Cleveland, you wont get 100,000 BTU in April or sepatember, let alone october.
An electronic heater has a thermostat you can set just like your house.
In one word, no. The new ones can approach 90% but more likely 85+. If you want to do a DETAILED analysis, you have to take it into consideration. The quick and dirty calculation with advertised BTU gets you close.no-mas said:Are gas heaters 100% efficient?
[/quote:1hlbbfjl]no-mas said:bk406 said:[quote="Red Shirt Ensign":1hlbbfjl]Electricity is very cheap in Cleveland,
Are gas heaters 100% efficient?
Yep. But the difference is I know that I'm getting 326k worth of heat for my $4.40, even when the ambient air temp is 55 degrees. At 55 degrees, my electric meter still spins at ~6kw/hr for a $1.00 an hour. I might have to run it 6 hours to get 326k BTU. Now i've spent 6 bucks to do what $4.60 in gas would do. Thats my point with NG being about as efficient as a heat pump in a lot of applications. The only reason i have a heat pump is that i only have access to propane. If they ever put NG on my street, the heat pump's going on ebay!racket said:so the $4.40 only buys you ~326k btu