73994 Heater 4kw
This part is a replacement 4 kw 240 volts 2.25" x 15" stainless steel tube factory for select Caldera hot tub models. The heater is powered and controlled by the control box.
The heater is inserted in the discharge of the jet pump plumbing and is located under the control box. Compatible with 1999 to current Caldera, Hot Spot, and Solana spa models.
| Make | Model | Date Range |
| Hot Spot | Relay | 2010-Current |
| Hot Spot | Rhythm | 2010-Current |
| Hot Spot | Tempo | 2010-Current |
| Hot Spot | SX | 2011-Current |
| Hot Spot | TX | 2011-Current |
| Hot Spot | Mallorca | 2006-2009 |
| Hot Spot | Sorrento | 2006-2009 |
| Hot Spot | La Palma | 2008-2009 |
| Hot Spot | Tobago | 2006-2009 |
| Hot Spot | Trinidad | 2006-2009 |
| Solana | SX | 2006-2010 |
| Solana | TX | 2006-2010 |
| Solana | RX | 2006-2009 |
| Caldera | Palatino | 2010-Current |
| Caldera | Marino | 2010-Current |
| Caldera | Vanto | 2011-Current |
| Caldera | Aventine | 2006-2015 |
| Caldera | Cumberland | 2006-2009 |
| Caldera | Olympia | 2006-2009 |
| Caldera | Tarino | 2013-Current |
| Caldera | C 30 | 2006-Current |
| Caldera | San Gabriel | 2008-2009 |
| Caldera | Oasis | 2006-2009 |
| Caldera | C 45 | 2006-2009 |
| Item | Description | Part # |
| 1 | Control Box | 76840 |
| 2 | Kit Control | 76843 |
| 3 | Fuse 25A/ SC Time Delay | 71618 |
| 4 | Control Thermistor | 72493 |
| 5 | Split Nut Union 2" | 33761 |
| 6 | Heater Assy | 73994 |
| 7 | Pressure Switch | 73995 |
| 8 | Hi-Limit Thermistor | 73992 |
| 9 | Tailpiece Heater | 73905 |
| 10 | O-Ring Tail Piece | 34447 |
| Item | Description | Part # |
| 1 | 15 Amp/ 115v GFCI w/Cover | 37870 |
| 2 | Control Box | Use 76840 |
| 3 | Fuse 25A/300V SC Time Delay | 71618 |
| 4 | Control Thermistor | 72493 |
| 5 | Split Nut Union 2" | 33761 |
| 6 | Heater Assy | 73994 |
| 7 | Presssure Switch | 73995 |
| 8 | Hi-Limt Thermistor | 73992 |
| * | Tail Piece Heater | 70905 |
| * | O-Ring Tail Piece | 34447 |
