24/7 Emergency Plumbing, Heating & Air
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OUR MISSION
Keeping your home running the way it should shouldn’t be a battle — and when something goes wrong, the last thing you need is a plumber who guesses, cuts corners, or leaves you with the same problem a week later. You deserve technicians who know what they’re doing and treat your home like it’s their own.
By The Book has proudly served El Cajon and the surrounding San Diego area for years. Our licensed experts understand every part of your plumbing, heating, and cooling system and know how to repair, replace, and fine-tune them with precision. We don’t rush the job — we inspect the whole system so the fix lasts, not just the day. If you want honest communication, clean work, and results you can rely on, count on By The Book — the Hero in Your Home.
Our Commitment
Our El Cajon location is fully staffed with licensed plumbing, heating, and air experts dedicated to keeping your home running smoothly year-round. Whether it’s a leak, a clogged drain, no hot water, or an AC system that can’t keep up, our team diagnoses the whole system and fixes the problem the right way — not just the quick way. With fast scheduling, upfront pricing, clean and code-correct workmanship, and repairs designed to last, El Cajon homeowners count on us for dependable service and long-term comfort.
SERVICE AREA
Mira Mesa, Poway, La Mesa, Lemon Grove, Spring Valley, Rancho, Chula Vista, National City, Santee, Lakeside, Alpine
LOCATIONS NEAR EL CAJON
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SAN DIEGO
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MIRAMAR
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TEMECULA
Customer Reviews
See Why Homeowners Trust us For Plumbing and HVAC service
4.9
74 Reviews
A+
4.9
28 Reviews
66 Reviews
4.9
66 Reviews
4.9
Aaden Branson
2025-10-13
2AM toilet overflow nightmare! Their emergency crew contained the flood and replaced the flange before sunrise.
Marco Neveah
2025-10-11
Complete bathroom overhaul included structural repairs, new fixtures, and waterproofing - all permit-perfect.
Wesley Bryant
2025-10-08
From the first call to the finished repair, everything was smooth and professional. The technician arrived early, was very respectful of our home, and got the heating system working again fast. It’s rare to find this level of service anymore.
Victor Hammond
2025-10-08
If you want honest service with zero pressure, this is the company to call. They didn’t try to upsell me or push unnecessary repairs. Just straightforward help and great results. I’ll be referring them to friends and family for sure.
Ulysses Graham
2025-10-08
Our central air unit wasn’t cooling properly, and I was worried about how long repairs would take. But they came out the next day and had it fixed within hours. The technician even gave me tips to maintain the unit better. Very impressed.
THE BY THE BOOK PROMISE
Day or night, weekends or holidays—if it’s urgent, we’ll be there.
No surprises or hidden fees. You’ll always know exactly what to expect before we start.
Our team arrives on time, fully equipped, and ready to get your home back to normal—fast.
We don’t leave until you’re happy. Every service is backed by our commitment to excellence.
We're the hero in your story
Same-day service and lasting results
done right the first time
Company & Contact
Phone: (866) 298-4326
Email: Service@bythebookpha.com
Address: 9528 Miramar Rd, Suite #4, San Diego, CA 92126
Plumbing License: blank
HVAC License: blank
© BY THE BOOK Plumbing • Heating • Air
We're the hero in your story
Same-day service and lasting results
done right the first time
Company & Contact
Phone: (866) 298-4326
Email: Service@bythebookpha.com
Address: 1110 Hancock St, San Diego, CA 92110
Plumbing License: 1078955 C-36
HVAC License: G20
© BY THE BOOK Plumbing • Heating • Air
We're the hero in your story
Same-day service and lasting results
done right the first time
Company & Contact
Phone: (866) 298-4326
Email: Service@bythebookpha.com
Address: 9528 Miramar Rd, Suite #4, San Diego, CA 92126
Plumbing License: blank
HVAC License: blank