{"title":"Universal Relays","description":null,"products":[{"product_id":"universal-24v-fan-relay-spst-hvac-blower-control-replacement","title":"Universal 24V Fan Relay SPST — HVAC Blower Control Replacement","description":"\u003cp\u003eUniversal 24V SPST fan relay for HVAC blower motor control. The fan relay activates the indoor blower motor when the thermostat calls for fan operation — used in both heating and cooling modes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSymptoms:\u003c\/strong\u003e Indoor fan won't turn on, fan runs continuously, fan doesn't switch between heating\/cooling speeds.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e SPST Isolation Relay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil:\u003c\/strong\u003e 24V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Rating:\u003c\/strong\u003e 20A @ 240VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e UL Listed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Power off. Remove 4-6 wires (photograph first). Pull old relay from mounting clip. Snap in new relay, reconnect wires. 10-15 min.\u003c\/p\u003e","brand":"National HVAC Parts","offers":[{"title":"Default Title","offer_id":63010237055347,"sku":"NHVAC-RLY-FAN","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/71mq9Fy_1fL._SL500.jpg?v=1782110091"},{"product_id":"universal-24v-dpdt-relay-hvac-switching-relay-replacement","title":"Universal 24V DPDT Relay — HVAC Switching Relay Replacement","description":"\u003cp\u003eUniversal 24V DPDT (Double Pole Double Throw) switching relay for HVAC systems. Used for reversing valve control in heat pumps, zone damper control, and dual-circuit switching applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e DPDT Switching Relay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil:\u003c\/strong\u003e 24V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContacts:\u003c\/strong\u003e Double Pole Double Throw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Same as fan relay. Power off, photo wires, swap, reconnect. 10-15 min.\u003c\/p\u003e","brand":"National HVAC Parts","offers":[{"title":"Default Title","offer_id":63010237153651,"sku":"NHVAC-RLY-DPDT","price":16.99,"currency_code":"USD","in_stock":true}]},{"product_id":"universal-24v-fan-relay-spst-hvac-blower-control-replacement-1","title":"Universal 24V Fan Relay SPST — HVAC Blower Control Replacement","description":"\u003cp\u003eUniversal 24V SPST fan relay for HVAC blower motor control. The fan relay activates the indoor blower motor when the thermostat calls for fan operation — used in both heating and cooling modes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSymptoms:\u003c\/strong\u003e Indoor fan won't turn on, fan runs continuously, fan doesn't switch between heating\/cooling speeds.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e SPST Isolation Relay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil:\u003c\/strong\u003e 24V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Rating:\u003c\/strong\u003e 20A @ 240VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e UL Listed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Power off. Remove 4-6 wires (photograph first). Pull old relay from mounting clip. Snap in new relay, reconnect wires. 10-15 min.\u003c\/p\u003e","brand":"National HVAC Parts","offers":[{"title":"Default Title","offer_id":63010374091123,"sku":"NHVAC-RLY-FAN","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/71mq9Fy_1fL._SL500_b8da67ad-57fc-44d6-a1f2-ae288d16c780.jpg?v=1782110967"},{"product_id":"universal-24v-dpdt-relay-hvac-switching-relay-replacement-1","title":"Universal 24V DPDT Relay — HVAC Switching Relay Replacement","description":"\u003cp\u003eUniversal 24V DPDT (Double Pole Double Throw) switching relay for HVAC systems. Used for reversing valve control in heat pumps, zone damper control, and dual-circuit switching applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e DPDT Switching Relay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil:\u003c\/strong\u003e 24V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContacts:\u003c\/strong\u003e Double Pole Double Throw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Same as fan relay. Power off, photo wires, swap, reconnect. 10-15 min.\u003c\/p\u003e","brand":"National HVAC Parts","offers":[{"title":"Default Title","offer_id":63010374418803,"sku":"NHVAC-RLY-DPDT","price":16.99,"currency_code":"USD","in_stock":true}]},{"product_id":"universal-24v-fan-relay-spst-hvac-blower-control-replacement-2","title":"Universal 24V Fan Relay SPST — HVAC Blower Control Replacement","description":"\u003cp\u003eUniversal 24V SPST fan relay for HVAC blower motor control. The fan relay activates the indoor blower motor when the thermostat calls for fan operation — used in both heating and cooling modes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSymptoms:\u003c\/strong\u003e Indoor fan won't turn on, fan runs continuously, fan doesn't switch between heating\/cooling speeds.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e SPST Isolation Relay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil:\u003c\/strong\u003e 24V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Rating:\u003c\/strong\u003e 20A @ 240VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e UL Listed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Power off. Remove 4-6 wires (photograph first). Pull old relay from mounting clip. Snap in new relay, reconnect wires. 10-15 min.\u003c\/p\u003e","brand":"National HVAC Parts","offers":[{"title":"Default Title","offer_id":63010584068467,"sku":"NHVAC-RLY-FAN","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/71mq9Fy_1fL._SL500_d9129eac-6b97-41ad-bed7-f5fcfa717b89.jpg?v=1782112207"},{"product_id":"universal-24v-dpdt-relay-hvac-switching-relay-replacement-2","title":"Universal 24V DPDT Relay — HVAC Switching Relay Replacement","description":"\u003cp\u003eUniversal 24V DPDT (Double Pole Double Throw) switching relay for HVAC systems. Used for reversing valve control in heat pumps, zone damper control, and dual-circuit switching applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e DPDT Switching Relay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil:\u003c\/strong\u003e 24V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContacts:\u003c\/strong\u003e Double Pole Double Throw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Same as fan relay. Power off, photo wires, swap, reconnect. 10-15 min.\u003c\/p\u003e","brand":"National HVAC Parts","offers":[{"title":"Default Title","offer_id":63010584166771,"sku":"NHVAC-RLY-DPDT","price":16.99,"currency_code":"USD","in_stock":true}]}],"url":"https:\/\/nationalhvacparts.com\/collections\/universal-relays-2.oembed","provider":"National HVAC Parts","version":"1.0","type":"link"}