A 100,000 BTU heater uses 1 therm of natural gas per hour, so a 400,000 heater consumes 4 therms an hour. 4 therms an hour x $1.67 = $6.68 per hour. So the magic number based on the most common 400,000 BTU pool/ spa heater is $6.68 per hour in gas cost to run your heater.
So, how much electricity does a pool heat pump use? About 5 kilowatts per hour per 100,000 BTU heat pump. For a general 100,000 BTU pool heat pump, the power you`ll utilize is approximately 5,000 Watts per hour. Typically, the National average for power stands at 13 cents for every kilowatt-hour.
For a typical size 400,000 BTU heater, that equals 4 gallons an hour.
On average, natural gas burns about 1 therm per 100,000 BTUs per hour (British Thermal Units). Meaning, an average pool heater between 300,000 and 400,000 BTUs will cost anywhere from $3.30 to $4.40 per hour to heat your pool.
The cost of propane at the time of this article is about $2.30 per gallon. This means an average pool heater between 300,000 and 400,000 BTU's will cost anywhere from $6.90 to $9.20 per hour to heat your pool.
On average you'll need between $200 to $500 to run it monthly with a pool cover. Electric heat pumps from trusted brands can last between 10 and 20 years. They're energy-efficient, and their use of surrounding air qualifies them as one of the most energy-efficient heating systems.
Electric heaters might cost between $175 and $600 per month to run, and electric pumps could cost around $120 to $200 per month.
If you want to get as much time as possible out of your pool, however, a heater is a good investment. With a pool heater, you can easily be swimming May through mid-October, giving you a good five months of use out of your pool. That's literally double the amount of time you'd get without one.
The size of your pool also matters, with larger pools costing more to heat than smaller ones. On average, however, a gas heater costs around $200 to $400 a month to run. Electric heat pumps cost less, coming in at about $100 to $200 a month.
It depends on a few things to determine how long it takes a heat pump to heat a pool. However, overall a heat pump generally heats a pool after 24 to 72 hours by 20-degrees Fahrenheit. For smaller pools like a spa pool, the heat pump can heat a pool between 45 and 60 minutes.
We have found that turning the heater off at night allows the water to cool rapidly. The heater then has to burn at a higher rate in the morning to make up the lost heat. The higher you turn the burner the lower the heating efficiency and the greater the heat loss from the exhaust gases.
You can expect a gas or heat pump pool heater to last 8 to 11 years, with an average of 10 years. Regular usage and maintenance is key to a longer lifespan.
By nature, gas heaters have a greater environmental impact than electric. However, electric takes longer to heat up your pool water and is less efficient in colder temperatures. This is because they rely on outside heat to warm up the pool water. You can avoid these issues, however, by using a pool cover.
A pool heat pump should not be left running all the time. For one, you are wasting electricity by keeping it on when your pool is already warm enough. Also, this will lead to an increase in energy costs month after month.
Solar pool heaters are the most cost-effective option that uses the sun's energy to heat your swimming pool water. It uses solar collectors, filter, pump and flows control valve to heat the pool in a way that is very economical.
A pool that is uncovered can lose up to 5 degrees F overnight; a good cover can cut that loss by half. Used at night or whenever your pool is not in use, the pool cover can help save fuel costs by cutting heat loss regardless of the type of heating you utilize.