Cart Continue shopping “4000W High-Power SCR Voltage Regulator, AC 220V, Single Phase, Digital Control – Enhances Electric Furnace & Water Heater Performance, Easy Installation” has been added to your cart. Remove item Thumbnail image Product Price Quantity Subtotal 4000W High-Power SCR Voltage Regulator, AC 220V, Single Phase, Digital Control - Enhances Electric Furnace & Water Heater Performance, Easy Installation $20.95 4000W High-Power SCR Voltage Regulator, AC 220V, Single Phase, Digital Control - Enhances Electric Furnace & Water Heater Performance, Easy Installation quantity $20.95 Coupon: Apply coupon Update cart Cart totals Subtotal $20.95 Shipping Free shipping Shipping to CA. Tax $0.00 Total $20.95 Proceed to Checkout Before ordering, please be sure to review our Order Processing & Shipping Policy, and our Returns & Refunds pages.