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The OTH4000 series offers a range of 2-wire line voltage thermostats that provides great energy s...

        Electronic Line-Voltage Thermostat · 4000 Watts Max · Non-Programmable · Ouellet OTH4000-A

        SKU: OTH4000-A
        Non-programmable electronic line-voltage thermostat for electric baseboard and convector heating, rated up to 4000W at 240V. The 2-wire proportional pulsing design is commonly used where simple temperature control is preferred over scheduling.
        Ouellet Heating Canada
        66   – Loyalty Rewards
         
        • $66.00
        Available to Order | Typically Arrives in 1 - 3 Weeks From Quebec Factory Warehouse

        What this product is for

        The Ouellet OTH4000-A is a non-programmable electronic line-voltage thermostat for controlling electric resistance heating such as baseboard heaters, convectors, and similar 120/208/240V heating loads. It is designed for straightforward room temperature control without daily or weekly scheduling.

        Use for

        Use for electric baseboard heaters, wall convectors, and other compatible line-voltage electric heating circuits where a 2-wire thermostat is required. It is suitable for residential and light commercial spaces that need simple set-and-forget control.

        Avoid for

        Avoid using this thermostat on low-voltage HVAC systems, heat pumps, gas furnaces, or applications requiring programmable scheduling. Do not exceed the thermostat's rated voltage or wattage.

        Best for

        Best for retrofit or replacement work where electricians need a direct non-programmable line-voltage thermostat for electric heat. It fits jobs where occupants want stable temperature control with minimal user setup.

        Installed in

        Typically installed in homes, apartments, offices, corridors, and small commercial rooms using electric baseboard or convector heat. Commonly wall-mounted in the heated space away from direct drafts or concentrated heat sources.

        Why this product exists

        This thermostat provides electronic temperature control for line-voltage electric heat without the added complexity of programming. The proportional pulsing control style is intended to help maintain steadier room temperature than basic mechanical switching in many electric heating applications.

        Compared with similar products

        Compared with programmable models, the OTH4000-A is simpler to install and operate when scheduling is not needed. Compared with mechanical thermostats, an electronic proportional thermostat is typically chosen for tighter comfort control. As a rule of thumb, line-voltage thermostats must be matched to the connected heater load and circuit voltage; actual performance depends on installation conditions, room layout, and local electrical code.

        Specifications

        • Manufacturer part number: OTH4000-A
        • Brand: Ouellet
        • Product type: Non-programmable electronic line-voltage thermostat
        • Control style: Proportional pulsing
        • Wiring: 2-wire
        • Voltage: 120/208/240V AC
        • Maximum load: 2000W at 120V; 3465W at 208V; 4000W at 240V
        • Maximum current: 16.7A
        • Temperature range: 41 to 86°F (5 to 30°C)
        • Application: Electric baseboard and convector heating
        • Typical buying note: At 240V, 4000W equals approximately 16.7A, so this thermostat is commonly selected for larger electric heat loads within its rating.
          • SKU
            OTH4000-A
          • Weight
            1.5 lbs
          • Manufacturer Part #
            OTH4000-A
        • Volts
          120/208/240
        • Watts
          2000/3465/4000
        • Brand
          Ouellet Heating Canada
        • Warranty
          5 year

        Minimum Order $20

        We accept the following payment methods:

        Accepted payment methods

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        Standard Shipping-Free on orders over $500 in Metropolitan Areas / Subject to $750 in Rural Areas.


        Minimum Order Is $20

        Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
         

        • PVC and EMT Pipe 
        • Wire and Cable 
        • Items over 48 inches in length 

        Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.

        Shipping Options:

        • A courier can deliver to your home, office, or your job site
        • Pick up at local depot near you (applies to the following locations)

        Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB 

        Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.

        THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS

        • We cannot deliver to P.O. boxes.
        • A signature may be required for shipments over $500.
        • No weekend delivery.
        • Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.

        Standard Shipping cost on orders less than $499

        Total shipping cost = "Per Shipment" cost + "Per Item" cost.  The "per item" cost is listed in terms of price per pound.

         

        Product Group

        Per Shipment*

        Per Item

        Boxes

        $6.99

        $1.49/lb

        Conduit & Raceway

        $149.99

        $2.49/lb

        Connectors & Fittings

        $5.99

        $1.19/lb

        Data & Structured Home

        $5.99

        $1.19/lb

        Distribution Equipment

        $5.99

        $1.19/lb

        Emergency Lighting

        $6.99

        $1.49/lb

        Heating & Ventilation

        $6.99

        $1.49/lb

        Lighting Controls

        $5.99

        $1.19/lb

        Lighting Indoor

        $6.99

        $1.49/lb

        Lighting Outdoor

        $6.99

        $1.49/lb

        Tools

        $4.99

        $.99/lb

        Wire & Cable

        $49.99

        $2.29/lb

        Wiring Devices

        $5.99

        $1.19/lb

        Any combination of the above items

        Highest applicable per-shipment charge

        As above

        Effective Date: August, 15, 1998(Updated August 2026)

        At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:

        Returns

        Defective Items:

        • If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
        • To initiate a return, please contact our customer service team with your order number and a description of the defect.

        Non-Defective Items:

        • We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.

        Return Process

        Authorization:

        • Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
        • Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.

        Shipping:

        • Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.

        Condition:

        • Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.

        Refunds

        • Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
        • Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.

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