Pay in installments of $59.75 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Tekmar 257 Control - Domestic Hot Water - Two StageTekmar 257 Control Domestic Hot Water Two Stage Features: 2 stage control Proportional or PID staging Equal runtime rotation Cumulative boiler run time hours Specifications: Agency Approvals CSA C US, meets class B: ICES & FCC Part 15 Ambient Conditions Indoor use only, 20 to 120 degrees F ( 30 to 50 degrees C), RH less than or equal to 90 percent Non condensing Control Type Microprocessor control, this is not a safety (limit) control Dimensions 4 3
Tekmar 257 Control - Domestic Hot Water - Two Stage
Features:
- 2 stage control
- Proportional or PID staging
- Equal runtime rotation
- Cumulative boiler run time hours
Specifications:
- Agency Approvals - CSA C US, meets class B: ICES & FCC Part 15
- Ambient Conditions - Indoor use only, -20 to 120 degrees F (-30 to 50 degrees C), RH less than or equal to 90 percent Non-condensing
- Control Type - Microprocessor control, this is not a safety (limit) control
- Dimensions - 4-3/4" x 2-7/8" x 7/8" (120 x 74 x 22 mm)
- Enclosure Material - White PVC plastic
- Enclosure NEMA Rating - NEMA 1
- Hydronic - HVAC Control Type - DHW Control
- Power Supply - 24 V (ac) plus / minus 10 percent, 50/60 Hz, 3 VA
- Relay - 240 V (ac) 10 A max, 1/3 hp
- Sensor - NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta=3892
Installation Manual
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 21 reviews
Sort
Product Reviews
★★★★★ 5
My Samoyed loved this!
Size: Medium
My dog’s favorite thing. This is his 4th toy and he loves it. The quality is great and it lasts very long. Definitely worth every penny you spend. It keeps my samoyed engaged every morning and every night. There is no choke hazard, so all dogs can use it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
★★★★★ 5
Long lasting
Size: Medium
My dogs love these and they last pretty long. I take them away when they get very small so I think they’re pretty safe.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 3
Meant for bigger dogs than mine
Size: Small
I bought this for my 10 month old pup who’s a VERY aggressive chewer. I’m going to say this is made for a large, older (than mine) dog. She tried to chew a couple times but eventually just walked away from it when I offered it to her and she had only made a few scratches in it. If you have that bigger dog that’s an aggressive chewer, it would be a good value for your money and will keep the engagement high for a long time with its heavy duty quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
★★★★★ 5
Finally… a dog chew that doesn’t become a homemade prison shank
Size: Medium
My dog has a real talent: turning every “tough chew” into a sharp, weaponized shard that could star in an episode of Locked Up: Canine Edition. But THIS chew? Absolute game changer.
For the first time ever, I can relax—no splinters, no pointy edges, no fear he’s secretly crafting a shiv under the couch. Just happy, safe chewing that actually lasts longer than five minutes.
It’s durable, it’s safe, it keeps him busy, and I no longer feel like I’m living with a furry little inmate planning an escape.
Highly recommend if your dog chews like he’s got nothing but time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 29, 2026
★★★★★ 4
Would buy again
Size: Small
Would have given 5 stars, but my dog was able to chew this down pretty quickly, so not the most durable. I do like that this is made with better material than other dog chews, so I would buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026