Plumbing & HVAC Services in Los Angeles, CA
California Contractor License #399170
- ●Serving homes since 1976
- ●Same-day service
- ●Licensed and insured
- ●Quality workmanship
Ready when you need us

Plumbing and HVAC services for Los Angeles properties
Los Angeles has homes and buildings from many construction periods, while the citywide median year built is about 1965. That does not mean every property still has plumbing or HVAC equipment from that time, but repairs and remodeling can leave a home with systems installed during different decades.
Because Los Angeles covers such a large area, conditions can vary considerably from one property to the next. Recurring clogs, damp areas, inconsistent hot water, weak airflow or uneven temperatures provide more useful clues than the age of the building alone.
Choose the closest service below, and a technician can inspect the affected system, explain the findings and help you decide whether repair, maintenance, installation or replacement is appropriate.
Browse by service category
Plumbing
Garbage Disposal
Leak Detection
Drain & Sewer
Water Heaters
Cooling
Heating
Our same day service promise
Our fully stocked trucks help us complete eligible, approved work during the same visit. Specialty parts, permits, or added work may require a follow-up.
100% Satisfaction Guarantee
If you are not satisfied with our completed work, we will return and redo work within the approved scope at no additional charge.
What happens when you request service in Los Angeles?
We keep the visit focused on the symptom you report and the system that needs attention.
- Tell us what you are noticing and which system is affected.
- We schedule the appropriate plumbing, drain or HVAC service.
- A technician inspects the relevant system and explains the findings.
- You receive upfront and transparent pricing before deciding whether to proceed.
- If you approve the work, the technician completes the authorized service and reviews the result with you.
Home-service planning for Los Angeles properties
Systems may have been updated at different times
The citywide median year built provides useful background, but it does not establish the age or condition of the plumbing, drain lines, water heater or HVAC equipment at a particular property. As a result, the service decision should begin with the symptoms you have noticed and an inspection of the affected system.
Recurring drain and leak symptoms deserve a closer look
A clog that returns after clearing, several slow drains, damp cabinets or an unexplained increase in water use can point to a problem that needs more than a temporary fix. If moisture is left alone, it can damage finishes and building materials, while a wastewater backup can make part of the plumbing system difficult or unsafe to use. Drain cleaning, drain and sewer repair or leak detection can provide the appropriate starting point.
Seismic plumbing and gas planning varies across Los Angeles
California Geological Survey maps show that fault, liquefaction and earthquake-induced landslide zones intersect portions of Los Angeles. While those mapped areas do not prove that a property has damage or needs a particular upgrade, they provide useful context when reviewing gas piping, water heater connections and automatic shut-off protection. An on-site evaluation can determine whether earthquake shut-off valve service or gas line service is appropriate. If you smell gas, however, leave the area and contact the gas utility from a safe location.
Why choose Mike Diamond for home service in Los Angeles?
One service team can help coordinate plumbing, drain, water-heater, cooling and heating needs. We inspect the affected system, explain the findings and provide pricing before work begins.
- We have serviced homes since 1976
- We are licensed and insured
- We have finance options available for large jobs
- We offer upfront and transparent pricing with no commitment
Areas served by our Hollywood management location
Our Hollywood management location also coordinates service for the following nearby cities and communities:
- Alhambra
- Altadena
- Arcadia
- Beverly Hills
- Glendale
- Montebello
- Monterey Park
- Pasadena
- Rosemead
- San Gabriel
- San Marino
- Sierra Madre
- South El Monte
- South Pasadena
- Temple City
- Universal City
- West Hollywood
Manager: Ken
Management location: 1900 N Cahuenga Blvd, Los Angeles, CA 90068 (View this location)
Call: 800-446-6453
Los Angeles plumbing and HVAC questions
What services can I schedule in Los Angeles?
You can request plumbing, drain and sewer, water-heater, garbage-disposal, leak-detection, air-conditioning and furnace service in Los Angeles. The service directory above separates repair, maintenance, installation and replacement options so you can start with the closest match.
Do you provide drain cleaning and sewer service in Los Angeles?
Yes. Services include drain cleaning, hydro jetting, drain or sewer repair and replacement, and emergency drain and sewer service. The appropriate method depends on the symptoms, pipe condition and location of the blockage or damage.
What signs can point to a hidden plumbing leak in Los Angeles?
Unexplained dampness, staining, peeling finishes, a musty smell, sounds of running water when fixtures are off or an unexpected increase in water use can justify leak detection. These symptoms do not identify the source by themselves, so an on-site evaluation is needed before repair options are discussed.
How do I decide between water heater repair, maintenance and replacement?
Repair may be appropriate when the tank is not damaged and the problem involves a replaceable part. Maintenance addresses routine upkeep rather than an active tank leak or failed component, while replacement may be needed when the tank itself leaks or the unit cannot provide dependable hot water after a practical repair.
When should I request HVAC service in Los Angeles?
Weak airflow, uneven temperatures, unusual equipment noise, repeated cycling, no cooling or no heat are reasons to have the affected system inspected. The findings help determine whether maintenance, repair, installation or replacement is the appropriate next step.
What should I do if a plumbing or gas problem seems unsafe?
Move away from an immediate hazard and call 911 when there is a fire or another urgent danger. If you smell natural gas, leave the area and contact the gas utility from a safe location. Avoid using fixtures during a sewage backup, and then request the appropriate emergency service.


