RXBH-1724A15J – HEAT KIT (OLDER AIR HANDLERS)
Rheem RXBH heat kits are SEER2-compliant electric heat strip assemblies -- they install into matching Rheem RH-series air handlers as supplemental heat for heat pumps OR primary heat on electric-only systems. Match kW to your air handler tonnage: 10 kW fits 1.5 / 2 / 2.5 ton; 15 kW fits 3 / 3.5 / 4 ton; 20 kW fits 5 ton. Going larger than your air handler's design max makes the strips overheat and trip the high-limit. Always disconnect main power at the breaker before opening the air handler. For older Classic Series air handlers, ask at the counter for the right cross.
10226 Plano Rd, Suite 104, Dallas TX 75238
Questions? Call or text (214) 340-9421
Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm
ProTech (Rheem/Ruud) RXBH-series field-installed electric heater kit, 15 kW at 208-230V single phase, supplied with a factory-installed circuit breaker. Rheem lists it for Ruud UHKA, UHKL, UHLA, UHLL, UHLP, UHPL, UHPN and UHSA air handlers and SureComfort AH410X13. Note that Rheem now shows this part as obsolete, with RXBH-1724A15J-1R as the replacement.
Specifications published by the manufacturer. Source: manufacturer documentation.
Specs
- Heating Capacity15 kW
- Voltage / Phase / Hz208-230 V / 1 Ph / 60 Hz
- Internal ProtectionFactory-installed circuit breaker
- BrandProTech (Rheem/Ruud OEM)
- Fits (Ruud)UHKA, UHKL, UHLA, UHLL, UHLP, UHPL, UHPN, UHSA
- Fits (SureComfort)AH410X13
- ElementsRust-resistant nickel chromium
- ListingETL Listed
- Dimensions (L x W x H)22.95 x 11.6 x 6.2 in.
- StatusObsolete - replaced by RXBH-1724A15J-1R
Cross-reference numbers
This part replaces the following OEM and aftermarket numbers:
- RXBH-1724A15J-B
Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.
How do I size a heat kit for my air handler?
Match the kW rating to your air handler's tonnage: - 10 kW -- fits 1.5, 2, or 2.5 ton air handlers - 15 kW -- fits 3, 3.5, or 4 ton air handlers - 20 kW -- fits 5 ton air handlers
Can I add electric heat to my heat pump system?
Yes -- heat pumps almost always use electric strips as backup ("auxiliary heat" or "emergency heat"). The thermostat energizes the strips when outdoor temps drop below balance point (typically 35-40 degrees F in DFW). Match the heat kit to your air handler model.
What does the suffix on the part number mean?
The suffix typically indicates breaker configuration: - BRK = factory breaker included - BR = breakerless (you provide the disconnect) - Other suffixes = circuit count, voltage taps, or thermostat compatibility
How long does an electric heat kit last?
20+ years typical for the kit itself; individual heating elements (sheath heaters) may fail in 8-15 years from cycling. Most kits have replaceable elements -- you don't have to replace the whole kit for one bad strip.
Why is my heat kit tripping the high-limit?
Restricted airflow is the #1 cause: clogged filter, dirty blower wheel, undersized return, closed-off supplies. The strips overheat when air doesn't move across them fast enough. Diagnose airflow before condemning the heat kit or limit switch.
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