Help me get a heater

Life has given us all challenges and today I’m asking for help with one of mine. My name is Dennis Zanardi. I am 63 years old, a husband of forty-one years, father of three and grandfather of three. Back in 2004, I had to go on disability due to a back injury which led to a surgery. I had my first of five back surgeries. In 2015, I had my last back operation which caused me to have five blood clots and no feeling in my right leg or foot. I landed up in a hospital for six months. I was told I may not walk again, however with a lot of physical therapy and heated pool therapy, I went from a wheel chair to a walker and now a cane.
Unfortunately, the heater on my pool went out July 4th, and I am not able to get in my pool anymore. The cooler water temperatures cause my back to tighten, nerves spasm and highly intense pain shoots down my back and into my leg and foot. The only relief I get is in the water. It is like stepping on pins and needles all the time.
    My only income is SSI, a fixed monthly amount. I am not able to qualify for a loan at this time so when I found out that the cost of a new heater is $1800.00 I felt extremely overwhelmed and discouraged. Any help at all would be appreciated. Thank you for your consideration. 
 
Dennis Zanardi