Finding the right wall heater knob ensures accurate temperature control and restores a damaged thermostat to working order. This guide reviews five replacement knobs compatible with common baseboard and wall heaters, summarizes their core features, and provides a practical buying guide to help match a knob to your heater and usage needs.
| Product | Brand | Key Feature |
|---|---|---|
| ZNTVW 63818002 Temp Control Knob | ZNTVW | Durable OEM-style replacement, heat resistant |
| 2PCS Baseboard Heater Thermostat Knobs | Generic | Two-pack, ribbed grip, D-shaft dimensions listed |
| GYOFFULL S99360135 Heater Knob | GYOFFULL | Compatible with multiple Broan models, glossy ABS |
| Broan S99360135 SRV Knob | Broan-NuTone | O.E.M. authorized part, direct fit for Broan units |
| Marley Baseboard Heater Thermostat Knob | Marley Engineered Products | Single replacement, ribbed sides for grip |
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ZNTVW 63818002 Temp Control Knob
This ZNTVW replacement knob is described as a compact, durable option designed to meet OEM standards. The manufacturer highlights heat resistance and wear resistance, indicating materials suited to the thermal environment of baseboard and wall heaters. The product listing emphasizes careful size matching: a D-shaped shaft opening is described, and buyers are instructed to verify shape and dimensions against the image.
Key benefits include an emphasis on material upgrade and a focus on precise size compatibility. Intended as a single-piece replacement, it targets users replacing a broken or missing control knob to restore function without altering the thermostat assembly. The product is positioned for straightforward DIY installation when the shaft profile matches.
2PCS Baseboard Heater Thermostat Temperature Control Dial Knob
This generic two-pack provides two identical knobs with ribbed sides to improve grip. The listing provides explicit dimensions: an outer diameter of about 2 inches and a D-opening approximately 1/4″ long by 5/32″ wide. Packaging size and light weight are also noted, and the product targets replacement needs for front-mounted heater knobs.
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Because the set includes two knobs, it can be useful for replacing both front knobs on heaters that use matched controls or for keeping a spare. The listing clarifies that the knob fits left-front or right-front positions but not end-mounted controls. Size specificity helps users measure the existing shaft to confirm fit before purchase.
GYOFFULL S99360135 Heater Knob
The GYOFFULL knob is listed as compatible with several Broan part numbers and heater models. It claims to replace item codes such as S99360135, AP5614013, and variations, making it a targeted option for owners of those models. The knob is molded from ABS plastic with a glossy surface, and the listing highlights OEM-standard testing and build quality.
Replacement compatibility is a core selling point: the listing names specific wall space heater models and Broan variants. This makes the product useful for users seeking a like-for-like replacement for a known model number. The design focus is on fit and finish, with a compact form expected to match original control ergonomics for the listed heater models.
Broan S99360135 SRV Knob For Wall Heater
This Broan-NuTone listing identifies the knob as an O.E.M. authorized part, using the exact OEM part number S99360135. OEM authorization implies direct compatibility with specified Broan units and suggests a replacement that should match original fit and operation. The listing states that it fits various Broan models, aligning with manufacturer’s specifications.
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Using an OEM part reduces uncertainty about fitment and durability for owners of matching Broan models. The listing contains fewer descriptive material details than some aftermarket items but centers on authoritative fit by brand association. This is typically preferred when a precise replacement is required to maintain original controls and performance.
Marley Baseboard Heater Thermostat Temperature Control Knob
Marley Engineered Products lists this item as a replacement knob compatible with multiple baseboard heater lines such as Fahrenheat, Dayton, Qmark, and Berko. The knob features ribbed sides for grip and is described as suitable for left or right front mounting positions (not compatible with end-mounted controls).
The listing includes a single knob per package and focuses on cross-brand compatibility. Marley’s positioning targets users seeking a part that fits a range of well-known heater brands, offering a straightforward replacement for front-mounted thermostat dials with similar shaft profiles and mounting orientations.
Buying Guide: How To Choose A Wall Heater Knob
Selecting the right replacement knob requires attention to mechanical fit, material, ergonomics, and intended use. The sections below outline key considerations and multiple comparison perspectives to help buyers match a knob to their heater and preferences.
1. Confirm Mechanical Compatibility
Shaft Shape And Size: Many knobs use a D-shaped shaft or flattened key profile. Measure the shaft width and depth or compare to the product’s listed D-opening dimensions. Without matching shaft geometry, a knob will not seat or will slip.
Mounting Location: Some knobs are designed for front-mounted controls only and will not fit end-mounted shafts. Verify whether your heater’s knob location matches the product description.
2. OEM vs Aftermarket
OEM Parts: Offer exact fit and likely the closest match to original appearance and operation. Ideal when matching a specific part number (e.g., Broan S99360135).
Aftermarket Options: Often lower cost and available in multipacks. They may offer universal sizing information and material upgrades but require careful dimension checks before purchase.
3. Material And Durability
High-Temperature Resistance: Knobs near baseboard heaters see elevated ambient temperatures. Materials like ABS or heat-resistant plastics are common; check listings for “heat resistant” or OEM-grade claims.
Wear Resistance: Ribbed or textured grips reduce slippage and increase longevity under frequent use. Consider tactile features if the knob will be adjusted often.
4. Ergonomics And Usability
Grip And Size: Larger diameters and ribbed edges aid in turning, especially for users with limited hand strength. Verify outer diameter and profile in product details.
Indicator Markings: Some knobs include clear notches or printed indicators for setting precision. If setting reproducible temperatures is important, choose a knob with visible indexing.
5. Quantity And Backup Parts
Two-packs or multi-packs can save time when replacing dual controls or keeping a spare. If only one control needs replacement, single OEM parts provide a precise match without extra units.
6. Compatibility With Heater Brands
Model Cross-Reference: Listings that reference multiple model numbers or brand lines (Broan, Marley, Fahrenheat, Dayton, Qmark, Berko) help identify potential fits. Use published part numbers to cross-reference with your heater’s manual or the existing knob.
7. Installation And Tools
Most knobs install on to a keyed shaft and require no special tools beyond possibly removing a retaining clip or small set screw. Check whether the product mentions installation ease or includes hardware, and confirm the D-shaped opening aligns with your shaft.
8. Visual Match And Finish
If maintaining original appearance matters (e.g., in visible living spaces), OEM parts or glossy finishes may better match existing hardware. Aftermarket knobs may vary in surface finish and color tone.
9. Safety And Electrical Considerations
Replacement knobs should only be used on compatible mechanical thermostat shafts. If the underlying control or wiring shows damage, replacing the knob alone may not resolve safety issues. Inspect the thermostat assembly and consult a technician for electrical concerns.
10. Comparison Perspectives
- Cost Efficiency: Generic two-packs offer redundancy and potential savings versus single OEM parts.
- Fit Assurance: OEM-labeled parts typically minimize fit uncertainty for specific models.
- Durability Tradeoffs: Aftermarket claims of “material upgrade” should be weighed against brand reputation and explicit heat-resistance claims.
- Compatibility Range: Parts listing multiple cross-reference numbers are useful for varied heater fleets or during maintenance of multiple units.
Before ordering, gather the heater model number or take clear measurements of the shaft profile and knob mounting location. Use product images and dimensional notes to confirm a match. If in doubt, prioritize OEM part numbers or sellers that provide explicit D-shaft measurements to reduce returns and ensure functional replacement.
Tips for Getting the Best HVAC Prices
- Prioritize Quality Over Cost
The most critical factor in any HVAC project is the quality of the installation. Don’t compromise on contractor expertise just to save money. - Check for Rebates
Always research current rebates and incentives — they can significantly reduce your overall cost. - Compare Multiple Quotes
Request at least three estimates before making your choice. You can click here to get three free quotes from local professionals. These quotes include available rebates and tax credits and automatically exclude unqualified contractors. - Negotiate Smartly
Once you've chosen a contractor, use the proven strategies from our guide — How Homeowners Can Negotiate with HVAC Dealers — to get the best possible final price.