The virusâ incubation period averages 25 days but can range from 15-30 days. Symptoms of infection include nausea, diarrhea, fever, jaundice, and anorexia. A vaccine is available, as well as an immunoglobulin shot that will prevent disease post-exposure. Infections can also clear with only supportive intervention.
Upfront Costs. Though they are less expensive to operate, electric heat pump pool heaters cost more upfront than both gas and electric resistance heaters. Heat pumps can cost up to $5,000, while the majority of gas and electric resistance heaters are available for around $1,000 and $2,000 respectively.The cost for installing heat pumps and gas heaters averages about $300 to $500, including labor and materials.eat pumps can cost up to $5,000, while the majority of gas and electric resistance heaters are available for around $1,000 and $2,000 respectively. The cost for installing heat pumps and gas heaters averages about $300 to $500, including labor and materials.
Selecting a Heat Pump Pool Heater. Heat pump pool heaters cost more than gas pool heaters, but they typically have much lower annual operating costs because of their higher efficiencies. With proper maintenance, heat pump pool heaters typically last longer than gas pool heaters.ypically, manufacturers measure the COP by testing a heat pump pool heater with an outdoor temperature of 80ÂºF and pool temperature of 80ÂºF. COPs usually range from 3.0 to 7.0, which converts to an efficiency of 300%â700%.