★★★★★ 5
Good for Exam
Format: Paperback
Very helpful, covers test materials and is a good resource.
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Reviewed in the United States on March 2, 2026
ESI ESRTP4+ 4 Series Wired Programmable Room Thermostat
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
ESI ESRTP4+ 4 Series Wired Programmable Room ThermostatThe ESRTP4+ is a hard wired programmable room thermostat which is simple and quick to install & easy to use. The control features OpenTherm which automatically reduces the flow temperature of your boiler helping you save up to 15% on your gas use significantly lowering bills. Features Opentherm communication which can save up to 15% gas when connected to an Opentherm compliant boiler Delayed Start & TPI Technology for maximum energy savings 7 day 5 2
Quick Dispatch:
Your ESI ESRTP4+ 4 Series Wired Programmable Room Thermostat orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your ESI ESRTP4+ 4 Series Wired Programmable Room Thermostat ships.
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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]
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4.7 ★★★★★
Based on 1677 reviews
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Product Reviews
★★★★★ 2
Incomplete
Format: Paperback
Only received three of the four volumes. Did not receive the core 1 study guide.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 8, 2025
★★★★★ 5
Very detailed
Format: Paperback
Great info. Definitely a great purchase
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Reviewed in the United States on February 8, 2026
★★★★★ 5
These are the actual reference books.
Format: Paperback
The actual books for the actual tests. You Need these if you want to study and pass the Comptia A+ exams. Legit the real deal.
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Reviewed in the United States on March 2, 2026
★★★★★ 5
Amazing, never have to but the disposables again
Color: Matte Gold
Great quality, heavy, and works great. Lots of replacement blades too!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
