
SP20866 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $111.81 | Condition is New, Rheem ProtectionPlus 4-Year Warranty Extension Kit (Pack of 6), FREE SHIPPING | ![]() |
![]() | $137.73 | Condition is New, Rheem Parts SP20866 4 Year Warranty Upgrade Kit AX4622, FREE SHIPPING | ![]() |
![]() | $150.00 | Condition is New, Protection Plus 4 Yr limited Warranty Extension kit Rheem Part -SP20866, shipping cost = $5.00 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $701.00 | Top Pick! Condition is New – Open box, RHEEM SP20866 / SP20866 (NEW IN BOX), shipping cost = $12.90 | 99.7% |

The Rheem SP20866 YR Extension Kit is an essential accessory for homeowners with Rheem gas water heaters, specifically those with models that utilize a YR condensate drain line. This extension kit is designed to provide additional length to the existing YR drain line, offering flexibility in installation and accommodating various drain locations.
The SP20866 Extension Kit comes with a 316L stainless steel drain line, which boasts superior corrosion resistance compared to traditional copper or PVC pipes. This ensures a longer lifespan and reliability, as the kit is less susceptible to damage from acidic condensate water. The stainless steel material also makes it less prone to leaks, providing peace of mind for homeowners.
This extension kit is designed to be easily installed with minimal plumbing knowledge. It consists of two main components: the extension pipe and the union connector. The union connector facilitates a quick and secure connection to the existing YR drain line, allowing for seamless integration. The entire kit is engineered to meet the highest industry standards, ensuring optimal performance and compatibility with Rheem water heaters.
The SP20866 YR Extension Kit is an ideal solution for homeowners who require additional length for their condensate drain line due to the location of their drain or due to the need for increased slope to facilitate proper drainage. With its high-quality stainless steel construction and simple installation process, this extension kit offers both functionality and durability, making it a valuable investment for any homeowner with a Rheem gas water heater.
The Rheem SP20866 YR Extension Kit is a product designed to extend the life of Rheem gas water heaters. Here are some potential pros and cons of purchasing this extension kit:
Pros:1. Cost-effective: Extending the life of your existing water heater with an extension kit can be more cost-effective than purchasing a new one.
2. Energy savings: A newer water heater may not be as energy-efficient as an older one that has been maintained properly. By extending the life of your existing water heater, you may be able to save on energy costs.
3. Convenient: Installing an extension kit is a relatively simple process that can be done by a homeowner or a professional.
4. Longer hot water supply: An extension kit can provide an additional 2-3 years of hot water supply, giving you more time before having to replace your water heater.
Cons:1. Limited lifespan: Extension kits only add a few years to the life of your water heater. Eventually, the unit will need to be replaced.
2. Cost: While extension kits may be more cost-effective than purchasing a new water heater, they still come with a price tag. Homeowners should consider the cost of the kit against the potential savings.
3. Installation: While installation is relatively simple, it still requires some time and effort. Homeowners without the necessary skills or tools may want to hire a professional.
In conclusion, the Rheem SP20866 YR Extension Kit can be a cost-effective way to extend the life of your existing gas water heater, providing additional energy savings and convenience. However, it is important to consider the limited lifespan, cost, and installation process before making a purchase. Ultimately, if your water heater is still functioning well and you are not ready to replace it, an extension kit may be a good option to consider. However, if your unit is old or consistently experiencing issues, it may be time to invest in a new water heater.
Details:
specifications maxohvac:
- brand: Rheem
- mpn: Sp20866
- model: Rheem Sp20866
- part type: Kit
payments maxohvac:
- other
- wallet: apple-pay
- credit card: visa
seller maxohvac:
- city: waldwick, new jersey
- rating: 100.0%
- # reviews: 197
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
offer maxohvac:
- availability: in stock
- prices: $111.81–$701.00
- item condition:
- New
- New – Open box
- options: ship-to-home
- started: february 4, 2026
- sold #: 10
- in stock #: 4
returns maxohvac:
- method: money back
- time: 30 days
- policy: returns accepted
- paid by: buyer
shipping maxohvac:
- transit: 3-9 days
- class: standard
- type: fixed
- service: usps ground advantage
- carrier: usps
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