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Water heater installers and replacers in Caldwell

Water Heaters R Us
16432 N. Midland Blvd #15
5.00(
3
)
Approved Pro
Water Heaters R Us
16432 N. Midland Blvd #15
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
27 years of experience

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability, is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business

"He is right on it. He knew what he was talking about. Negotiated a good price, and I had a brand new made in the USA Bradford White water heater. The last Bradford white lasted over 20 years. He is honest and does a good job. Hot water in no time. AWESOME!"

June W on January 2025

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability, is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business

"He is right on it. He knew what he was talking about. Negotiated a good price, and I had a brand new made in the USA Bradford White water heater. The last Bradford white lasted over 20 years. He is honest and does a good job. Hot water in no time. AWESOME!"

June W on January 2025


Avatar for Pristine Plumbing and Construction
Pristine Plumbing and Construction
989 South Benewah Lake Avenue
4.73(
30
)
Approved Pro
Pristine Plumbing and Construction
989 South Benewah Lake Avenue
4.73(
30
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
4 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Keanu arrived on time and was very helpful. Will definitely use them again."

Angel O on October 2023

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Keanu arrived on time and was very helpful. Will definitely use them again."

Angel O on October 2023


Avatar for All County Plumbing, LLC.
All County Plumbing, LLC.
337 Spur Ave.
5.00(
7
)
Approved Pro
All County Plumbing, LLC.
337 Spur Ave.
5.00(
7
)
Approved Pro
Customers say: Quick response
10 local quotes requested
14 years of experience

Our mission at All County Plumbing, LLC. is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on homeowner faces at the end of a project! All County Plumbing, LLC. stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you the quality that you can measure and a finished product that will enhance your home forever. Call us today!

"He was very professional and even went to a store to get the right parts after he looked at the problem."

Jeff P on June 2025

Our mission at All County Plumbing, LLC. is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on homeowner faces at the end of a project! All County Plumbing, LLC. stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you the quality that you can measure and a finished product that will enhance your home forever. Call us today!

"He was very professional and even went to a store to get the right parts after he looked at the problem."

Jeff P on June 2025


Idaho Plumbing Services
18967 Upper Pleasant Ridge Road
4.53(
44
)
Approved Pro
Idaho Plumbing Services
18967 Upper Pleasant Ridge Road
4.53(
44
)
Approved Pro
Customers say: Quality work
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
12 local quotes requested

Idaho Plumbing Services is proud to be a locally owned and operated business that services Ada and Canyon Counties as well as the surrounding community. With years of experience and unmatched expertise, we can help with any and all of your plumbing needs. From water heaters to water mains, our customers know that they can count on us to be timely, tidy and when the job is done, that they will be 100% satisfied with the work. Let us show you the Idaho Plumbing Services difference, get in touch today!

"I found a seeping leak in my grass shortly after turning on the sprinkler system for the year. Turns out it was the water main line. After digging for 3 hours i determined I needed professional help. I logged on to Angi's and decided to send my information to 2 of the 4 service providers. Within 30 minutes, Idaho Plumbing Services called and within the hour had a person at my house to review the problem and bid the replacement of the 50 year old galvanized pipe main line from the water meter to the house. As promised, they had the new line installed and water on by the following afternoon. Work was completed as after the new line was inspected by the city. Communication about the progress of the project was excellent No surprises. Highly recommend."

Jeff H on May 2024

Idaho Plumbing Services is proud to be a locally owned and operated business that services Ada and Canyon Counties as well as the surrounding community. With years of experience and unmatched expertise, we can help with any and all of your plumbing needs. From water heaters to water mains, our customers know that they can count on us to be timely, tidy and when the job is done, that they will be 100% satisfied with the work. Let us show you the Idaho Plumbing Services difference, get in touch today!

"I found a seeping leak in my grass shortly after turning on the sprinkler system for the year. Turns out it was the water main line. After digging for 3 hours i determined I needed professional help. I logged on to Angi's and decided to send my information to 2 of the 4 service providers. Within 30 minutes, Idaho Plumbing Services called and within the hour had a person at my house to review the problem and bid the replacement of the 50 year old galvanized pipe main line from the water meter to the house. As promised, they had the new line installed and water on by the following afternoon. Work was completed as after the new line was inspected by the city. Communication about the progress of the project was excellent No surprises. Highly recommend."

Jeff H on May 2024


Avatar for Foul Weather Heating and Cooling
Foul Weather Heating and Cooling
424 Diamond Street
4.74(
27
)
Approved Pro
Foul Weather Heating and Cooling
424 Diamond Street
4.74(
27
)
Approved Pro
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
23 local quotes requested

We are a locally Veteran owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients!

"Gave a second opinion. Glad I got it. Saved me $3,000. Straight shooter. Excellent job and amazing follow up."

Tammara T on April 2025

We are a locally Veteran owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients!

"Gave a second opinion. Glad I got it. Saved me $3,000. Straight shooter. Excellent job and amazing follow up."

Tammara T on April 2025


Avatar for Top Shelf Heating and Air
Top Shelf Heating and Air
2251 E Chinden Blvd
4.92(
49
)
Approved Pro
Top Shelf Heating and Air
2251 E Chinden Blvd
4.92(
49
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
121 local quotes requested

Top Shelf Heating and Air is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Did a great job, quick, kind and efficient. They were super flexible with the time as well. Would highly recommend and will be calling for any help in the future."

Frankie S on May 2025

Top Shelf Heating and Air is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Did a great job, quick, kind and efficient. They were super flexible with the time as well. Would highly recommend and will be calling for any help in the future."

Frankie S on May 2025


Avatar for Z Plumberz of the Treasure Valley
Z Plumberz of the Treasure Valley
905 Caldwell Blvd
5.00(
6
)
Approved Pro
Z Plumberz of the Treasure Valley
905 Caldwell Blvd
5.00(
6
)
Approved Pro
35 local quotes requested
5 years of experience

Here at Z Plumberz of the Treasure Valley, we pride ourselves on our professionalism, as well as our ability to complete every job to the homeowner's total satisfaction. We never leave a job unfinished, or a homeowner not 100% satisfied with our level of service. We handle plumbing work in Nampa and the surrounding areas - Call today!

"Outstanding service from an amazing owner! Honest, knowledgeable, and truly cares about the quality of work and customer satisfaction. It?s rare to find someone who takes so much pride in their business?highly recommend!"

Clint L on May 2025

Here at Z Plumberz of the Treasure Valley, we pride ourselves on our professionalism, as well as our ability to complete every job to the homeowner's total satisfaction. We never leave a job unfinished, or a homeowner not 100% satisfied with our level of service. We handle plumbing work in Nampa and the surrounding areas - Call today!

"Outstanding service from an amazing owner! Honest, knowledgeable, and truly cares about the quality of work and customer satisfaction. It?s rare to find someone who takes so much pride in their business?highly recommend!"

Clint L on May 2025


Avatar for 1800-Plumber+Air of Meridian
1800-Plumber+Air of Meridian
870 E Franklin Road Suite 504
5.00(
8
)
Approved Pro
1800-Plumber+Air of Meridian
870 E Franklin Road Suite 504
5.00(
8
)
Approved Pro
Customers say: Quick response
81 local quotes requested
2 years of experience

At 1-800 Plumber +Air of Meridian, we're not just good—we're the BEST! Our mission isn’t about being better than the competition; it’s about delivering fast, reliable plumbing and HVAC emergency services when you need them most. With 87 Google reviews and a 4.9-star rating, our customers say it BEST—we’re here to give you an unbeatable service experience!

"Friendly, professional, and efficient! They called me within in 15 mins of my request and came out same day. Juan was professional, informative, polite, and friendly. Highly Recommend!"

Ashley N on April 2024

At 1-800 Plumber +Air of Meridian, we're not just good—we're the BEST! Our mission isn’t about being better than the competition; it’s about delivering fast, reliable plumbing and HVAC emergency services when you need them most. With 87 Google reviews and a 4.9-star rating, our customers say it BEST—we’re here to give you an unbeatable service experience!

"Friendly, professional, and efficient! They called me within in 15 mins of my request and came out same day. Juan was professional, informative, polite, and friendly. Highly Recommend!"

Ashley N on April 2024


Avatar for Magic Electric, Plumbing, Heating + Air
Magic Electric, Plumbing, Heating + Air
7255 W Franklin Rd
4.79(
209
)
Approved Pro
Magic Electric, Plumbing, Heating + Air
7255 W Franklin Rd
4.79(
209
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
176 local quotes requested

With over 100 years of combined experience, Magic Electric & Plumbing has a great team of highly skilled workers ready to work for you! At Magic Electric & Plumbing we guarantee your experience with us will be professional, honest and of the best quality. Our team will provide you with hassle free scheduling, upfront pricing and will be clean and efficient so you can get back to your day! Our goal is to build long term, working relationships based on excellent customer satisfaction.

"I was satisfied with every step of the process: the estimate, the appointment, and the actual work. Clear explanation of current situation, concise explanation of options, price not too high, and careful work, all of which were handled with integrity."

Sumiko G on November 2024

With over 100 years of combined experience, Magic Electric & Plumbing has a great team of highly skilled workers ready to work for you! At Magic Electric & Plumbing we guarantee your experience with us will be professional, honest and of the best quality. Our team will provide you with hassle free scheduling, upfront pricing and will be clean and efficient so you can get back to your day! Our goal is to build long term, working relationships based on excellent customer satisfaction.

"I was satisfied with every step of the process: the estimate, the appointment, and the actual work. Clear explanation of current situation, concise explanation of options, price not too high, and careful work, all of which were handled with integrity."

Sumiko G on November 2024


Universal Plumbing
2801 Performance Lane
5.00(
6
)
Approved Pro
Universal Plumbing
2801 Performance Lane
5.00(
6
)
Approved Pro
4 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all the work we perform. We are experts and will always keep you educated about the work process. We look forward to earning your business.

"Very professional, clean, and fast. Very satisfied with the work done. Will be doing business again! "

tanner s on April 2025

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all the work we perform. We are experts and will always keep you educated about the work process. We look forward to earning your business.

"Very professional, clean, and fast. Very satisfied with the work done. Will be doing business again! "

tanner s on April 2025

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Showing 1-10 of 593

FAQs for water heater installation and replacement projects in Caldwell, ID

You'll need an expansion tank if your home has a closed water system, which is standard in newer homes or those with backflow preventers or pressure regulators. Expanding hot water has nowhere to go in closed systems, creating potentially damaging pressure. The expansion tank provides space for this expanded water, protecting your plumbing system and water heater from premature failure. Many local building codes now require expansion tanks, and some water heater warranties may be voided without one.

For a standard 50-gallon water heater, a two-gallon expansion tank is sufficient. This sizing assumes normal household water pressure between 40 and 60 psi. If your home has higher water pressure (60 to 80 psi), consider upgrading to a slightly larger tank for added protection. The expansion tank's purpose is to accommodate the increased volume that occurs when cold water heats up, which is proportional to your water heater's capacity.

Watch for signs like dripping water around the tank, fluctuating water pressure throughout your home, or unusual noises in your plumbing system. A properly functioning expansion tank should feel light when tapped on the bottom—if it feels heavy or waterlogged, the internal bladder has likely failed. Other indicators include frequent triggering of your temperature and pressure relief valve, visible corrosion on the tank, or unexplained increases in your water bill, suggesting hidden leaks.

Most expansion tanks have a service life of five to 10 years, though some may last up to 12 years or more with proper maintenance. Factors affecting lifespan include water quality, system pressure, installation quality, and tank construction. Hard water areas often see shorter lifespans due to mineral buildup. Regular maintenance checks can help identify potential issues before complete failure. When your water heater is due for replacement, it's wise to replace the expansion tank simultaneously, even if it hasn't failed yet.

A 30-gallon water heater needs an expansion tank if your home has a closed plumbing system. The need for an expansion tank is determined by your plumbing system type rather than water heater size. Even smaller water heaters create thermal expansion when heating water. If your home has a backflow preventer, pressure regulator, or check valve on the main water line, you have a closed system that requires an expansion tank. Check your local plumbing codes, as many jurisdictions now mandate expansion tanks regardless of water heater size.

The Caldwell, ID homeowners’ guide to water heater installations and replacements
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