Master Spa – X801100 – 4.0kW Heater Assembly with Pressure Switch
4.0kW Heater w/ Pressure Switch
You should see “50143” on the silver label on the old heater
Master Spas recommends this part as a replacement for:
NLA X801701 – 4.0kW Heater Assembly w/ Pressure Switch
All heaters come with 1-year warranty from the day of purchase. Shipping is not included in the warranty of the heaters. If you, the customer, return any of the said listed items back to Master Hot Tub Parts you, said customer, are responsible for the shipping cost.