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I have an older spa that does not heat the water, every thing else seems to work. It has just been sitting for the past year, is there a universal heater that is easy to install (since I will be the one to install, unless an electrician is recomended). Or should I just have someone come haul it away? The model # on the pump is MD - S48L2A10...thank you for any help.
Usually a spa heater is not too difficult to replace. If you would like to email me directly at mary@hottubworks.com with any pictures of the old heater I can help walk you through the replacement. But before you replace the heater try removing the spa filter and turn the thermostat up and see if the heater will come on. If you have a water flow issue such as a clogged or dirty filter the pressure or flow switch will not allow the heater to come on.