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Browse ProductsWater Heater Parts
Shop Water Heater Replacement Parts at National Air Warehouse. Compare brands, sizes and efficiency ratings, and order online with support from our HVAC team.
Talk to an expert
Need help choosing the right system or part? Curious about how shipping works? Call or live chat to speak with one of our knowledgeable professionals, Mon – Fri 8AM to 5PM ET.
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In Stock A.O. SMITH Pilot Assembly Thermopile w/ Tubing (Propane) 100093983 100093983
$102.72
Shipping included
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In Stock AMERICAN STANDARD Piezo Electric Assembly (Igniter) 50315070783 50315070783
$50.45
Shipping included
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In Stock RHEEM EEMAX & ECOSMART 1/2" Inline Flow Regulator w/ 1.0, 1.5, and 2.0 GPM Inserts IFR1-2 IFR1-2
$53.41
Shipping included
In Stock RHEEM EEMAX & ECOSMART 3/4" NPT Inline Flow Regulator w/ 2.0, 3.0, 4.0, and 5.0 GPM Inserts IFR3-4 IFR3-4
$66.33
Shipping included
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In Stock Genuine water heater replacement parts
We stock more than 30 replacement parts for Rheem, Ruud, EcoSmart, Eemax, Richmond, Rinnai, A.O. Smith and American Standard water heaters, including control boards, temperature sensors, gas valves, flame rods, igniters, terminal blocks, fuses and flow regulators.
Finding the right part
- Match by part number: the number printed on the old part is the surest match.
- Or by model: use the model and serial number on the water heater rating plate. Each product page lists compatible models.
- Safety: gas valves, igniters and control boards should be installed by a licensed technician.
Shipping and returns
Free shippingIncluded on orders to the continental US.
Fast dispatchParts ship by UPS or FedEx Ground in 1 to 2 business days.
Tampa pickupWill-call pickup at our Tampa warehouse, Monday to Friday.
30-day returnsUnused items in original packaging, within 30 days of delivery. Special-order items are final sale.
Not sure which part you need?Call us with your model number, Monday to Friday, 8am to 5pm ET.