Used to break down old gas and water connections and cut new copper or black pipe to length. Clean cuts mean fewer fittings and fewer leak points behind the wall.
Tankless Water Heater Installation Riverside CA
Tankless Water Heater Installation Riverside CA is what we do every week, from 1920s bungalows near downtown to new builds out in Orangecrest.
Serving Riverside and nearby areas.
How big is your tankless job?
Line upgrade
New gas run, longer venting, or a repipe of the supply lines
- 1. Straight swap Existing 3/4-inch gas line and a clear wall to mount the unit on
- 2. Line upgrade New gas run, longer venting, or a repipe of the supply lines
- 3. Full remodel Relocating the unit, adding a recirculation loop, or a multi-unit building
Drag the needle to compareTouch and drag the needle
- 15Services from one local team
- 11Areas served around Riverside
- Measure firstGas pressure and flow checked before we quote
- Test afterEvery hot fixture checked before we leave
What Our Tankless Installation Includes
Every install is quoted flat-rate with the parts, permit, and labor spelled out.
Work order
Tankless Water Heater Install- Unit and Mounting Hardware: The tankless unit itself, a wall bracket rated for the load, and stainless fasteners into studs. We do not hang a 60-pound heater on drywall anchors. If the wall needs blocking, we add it.
- Gas Line Connection: New gas flex or hard pipe from the existing stub to the unit, a drip leg, and a shutoff valve. If the existing line is undersized for the burner, we quote the upgrade separately before we start cutting.
- Water and Condensate Lines: Copper or PEX supply lines with dielectric unions, plus a condensate drain line routed to an approved location. On condensing units we install a neutralizer to protect the drain from acidic condensate.
- Venting to Code: Manufacturer-approved venting in PVC, CPVC, or stainless, run to an outside wall or through the roof with proper clearances. We check the vent termination against Uniform Plumbing Code (UPC) and local Riverside requirements.
- Isolation Valves and Filter: Service valves on the cold and hot sides plus a sediment filter ahead of the unit. That setup lets you or a technician descale the heat exchanger in about 30 minutes instead of pulling the whole unit off the wall.
- Permit and Inspection: We pull the permit with the City of Riverside, schedule the inspection, and meet the inspector on site. You get the signed-off permit for your records, which matters when you sell the house.
What the first visit covers
First visit
We measure gas pressure, incoming water temperature, and fixture demand, then confirm where the unit will mount and how it will vent.
Tankless installs for Riverside homes
From single-family houses to condos and ADUs, we size the unit to the home.
Single-family homes
Sized for showers, laundry, and dishwasher at once
Condos and townhomes
Concentric venting for HOA clearance rules
ADUs and guest houses
Compact units for smaller fixture counts
Older homes
Gas line and supply upgrades before the install
Tankless installs for Riverside businesses
Restaurants, salons, and small multi-unit properties with steady hot water demand.
Restaurants
High-demand units for dish and hand sinks
Salons and spas
Continuous hot water for back-to-back services
Multi-unit properties
One unit per dwelling with separate isolation valves
Tankless Water Heater Installation Riverside CA
A tankless unit is only as good as the gas line, venting, and sizing behind it. Done right, it delivers hot water for 15 to 20 years. Done cheap, it short-cycles and fails in three.
Tankless Water Heater Installation Riverside CA is a plumbing upgrade that replaces your storage tank with a wall-mounted heat exchanger that fires only when you open a hot tap. We run a dedicated gas line sized for the burner, upgrade the venting to match the unit, transition the cold and hot lines in copper or PEX, and mount the heater on a bracket rated for the load. A typical residential job takes four to eight hours, and we test flow and temperature at every fixture before we pack up.
Riverside homes built before 1980 often have a 40-gallon tank tucked in a closet with a 1/2-inch gas stub that will not feed a 199,000 BTU burner. We see it in Rubidoux, near the 91, and in the older tracts off Magnolia. That is where a new tankless water heater install Riverside starts with a load calculation, not a box swap. We check incoming water temperature, fixture count, and gas meter capacity so the unit actually keeps up.
- What it is
- A wall-mounted heater that fires only when hot water flows
- When it helps
- Running out of hot water, high gas bills, or a failing tank
- What you get
- Endless hot water, lower gas use, and freed-up floor space
How Our Tankless Installation Process Works
No surprises. Here is exactly what happens from the first phone call to the final walkthrough, with real timeframes for a Riverside home.
Tools and Methods We Use
Each method answers a different question. Together they leave very little to guess.
Crimps copper and PEX fittings in seconds without a torch. Faster installs, no open flame near gas lines, and consistent joint quality on every connection.
Reads static and dynamic gas pressure at the meter and at the unit. Tells us whether the existing line can carry the burner load or needs an upgrade before we hang the heater.
Inspects wall cavities and utility closets for hidden moisture before we mount a new unit. Catches old tank leaks that would otherwise sit behind the new install.
Checks flue gas on startup to confirm the unit is burning clean. Verifies venting is pulling correctly and the air-fuel mix is in spec.
When Riverside Homes Go Tankless
A family of five in Orangecrest with a 12-year-old 50-gallon tank and morning shower conflicts.
We sized a 199,000 BTU condensing unit, ran a new 3/4-inch gas line from the meter, and vented through the side wall.
HomesA downtown Riverside condo with HOA rules on exterior venting and a shared gas meter.
We reviewed the HOA guidelines, selected a unit with a concentric vent that met the clearance rules, and coordinated access with the…
HomesA 1950s home in Rubidoux with galvanized supply lines and a failing tank in the garage.
We repiped the hot and cold supply in PEX to restore flow, then installed a tankless unit with isolation valves and a…
HomesA landlord with a duplex near UC Riverside replacing two aging tanks between tenants.
We installed two mid-size condensing units, one per unit, with separate isolation valves.
Businesses
How Tankless Installs Run in Riverside
Riverside sits in a hard-water zone, with 8 to 12 grains per gallon coming off the Colorado River and local groundwater. That scale is the main reason tankless units fail early here, and it is why we install isolation valves and a sediment filter on every job.
Wood Streets
1920s and 1930s homes with tight utility closets and 1/2-inch gas stubs. Most need a gas line upgrade and a side-wall vent run to fit a tankless unit.
Orangecrest
1990s and 2000s construction with 3/4-inch gas and PEX supply. Straightforward installs, often a same-day job when the closet has room for wall mounting.
Rubidoux
Older housing stock with galvanized lines and detached garages. We usually repipe the hot and cold supply before hanging the tankless unit.
- Wood Streets
- Orangecrest
- Rubidoux
- Eastvale
- Downtown Riverside
From problem to finished result.
Slide to compare the photo with an illustrative inspection view. It is generated from the photo, not a measurement.
Photo50-Gallon Tank to Wall-Mounted Tankless
Before: A family of four in Orangecrest had a 12-year-old 50-gallon tank in the garage. The third shower of the morning ran cold, and the tank was starting to rust at the base.
After: We installed a 199,000 BTU condensing unit on the garage wall, upgraded the gas line to 3/4-inch, and vented through the side wall. Install took one day. Hot water now holds 120F through three showers and laundry.
Condo Tank Swap with HOA Venting Rules
Before: A downtown Riverside condo had a 40-gallon tank in a closet off the kitchen, and the HOA prohibited roof penetrations. The owner wanted tankless but had been told it was not possible in the building.
After: We selected a unit with a concentric vent that met the HOA's side-wall clearance rules, ran the gas and water lines through the existing closet wall, and passed inspection on the first visit. The old tank closet is now pantry storage.
Rubidoux Repipe Plus Tankless Upgrade
Before: A 1952 home in Rubidoux had galvanized supply lines with low pressure at the far bathroom, and the garage tank was leaking at the drain valve. Hot water took over a minute to reach the master bath.
After: We repiped the hot and cold supply in PEX, upgraded the gas line from 1/2-inch to 3/4-inch, and installed a tankless unit with isolation valves and a sediment filter. Hot water now reaches the master bath in about 20 seconds, and pressure is even throughout the house.
Problems a Tankless Install Solves
Most Riverside homeowners call us because something is already failing.
Running out of hot water with a full house
A 40-gallon tank recovers in 30 to 45 minutes. With three people showering in the morning, the third one gets a cold finish.
Rusted tank leaking in the garage or attic
A failed tank can dump 40 to 50 gallons before you notice. In an attic install, that means ceiling drywall, insulation, and possibly a mold problem.
High gas bill from standby heat loss
That standby loss shows up on every SoCalGas bill, month after month, for the life of the heater.
No space for a tank in a remodel
Kitchen and bath remodels often need the water heater closet for storage or a stackable laundry.
Why Riverside Homeowners Go Tankless
A tankless unit changes how your house uses hot water. No standby loss, no 40-gallon limit, no waiting for recovery.
Endless Hot Water
A properly sized unit delivers hot water at 120F continuously.
Lower Gas Bills
Tank heaters keep 40 to 50 gallons hot 24 hours a day, whether you are home or not. Tankless only fires when water flows.
Frees Up Closet Space
A tank takes a 2-foot by 2-foot footprint and needs clearance. A wall-mounted tankless unit is about the size of a carry-on suitcase.
15 to 20 Year Lifespan
Tanks last 8 to 12 years in Riverside hard water. Tankless units run 15 to 20 with annual descaling.
Tankless Installation Pricing in Riverside
That covers the unit, permit, labor, venting, and haul-away of the old tank.
Included
Quoted after a first look
- Unit and Mounting Hardware
- Gas Line Connection
- Water and Condensate Lines
- Venting to Code
What changes the scope
Quoted after a first look
- Unit Size and Brand
- Gas Line Upgrade
- Venting Configuration
- Location and Access
What you get in writing
Clear records you can keep and share.
Sizing findings
Gas pressure, flow, and fixture count recorded on site
Install photos
Before and after shots of the unit and connections
Permit record
Signed-off permit from the City of Riverside
Tankless Experience You Can Verify
Gas line sizing, venting, and condensate management are where most DIY and cut-rate installs fail, and those are the three things we never shortcut.
Gas pressure reading
Static and dynamic pressure at the meter tells us if the line can carry the burner load.
Inlet water temp
Winter inlet around 55F cuts output, so we size the unit for the coldest month.
Fixture flow rate
Total gallons per minute across all hot fixtures sets the minimum unit rating.
Is your Riverside address covered?
Type your ZIP code or town and we will confirm. If yours is not listed, call and ask.
Riverside ZIP codes
- 92508
- 92503
- 92501
- 92506
- 92505
- 92504
- 92507
- 92521
- 92502
- 92513
- 92514
- 92516
- 92517
- 92522
What Riverside Customers Say
Our 50-gallon tank was 14 years old and we were down to two showers before cold water. Bolt Plumbers sized a Navien for the house, ran a new 3/4-inch gas line, and had it fired up the same day. Water is hot at the kitchen sink in about 15 seconds now. They hauled the old tank off and left the closet cleaner than they found it.
We had three bids. Bolt was the only one who actually measured gas pressure and asked about our fixture count. The others just quoted a box. Install took about six hours, permit sign-off came a few days later, and they walked me through the annual descale.
We manage a 12-unit building near the Mission Inn and needed tankless units in two units with HOA venting rules. Bolt handled the HOA paperwork, coordinated access with tenants, and passed inspection on the first try. Both units have been running eight months with no callbacks.
Frequently Asked Questions
Short answers for the first few minutes. The team can cover the rest.
Still have a question?
Describe what you are seeing and we will point you to the right next step.
+16149578979A straight swap with an existing 3/4-inch gas line sits at the low end. Jobs needing a gas line upgrade, new venting through the roof, or a recirculation loop land higher. We quote flat-rate before we start.
Yes, if you plan to stay in the home more than five years. You cut standby gas loss by 20 to 30 percent, gain 15 to local experience life, and stop worrying about a tank flood. Riverside hard water means you must descale annually, but with isolation valves that is a 30-minute job.
A standard swap takes four to six hours. If we need to run a new gas line, upgrade the venting, or add a recirculation loop, plan on a full day, sometimes two. We schedule the permit inspection separately, usually within a few business days of the install.
Most Riverside single-family homes need a 199,000 BTU condensing unit rated for 9 to 11 gallons per minute. That covers two showers plus laundry running at once. Smaller condos and ADUs can use a 140,000 BTU unit. We size by fixture count and incoming water temperature, not square footage.
Related Services
Other services from the same team.
Get Your Tankless Water Heater Installation Riverside CA Quote
+16149578979Call us with your address and a photo of your current heater. We will give you a flat-rate number, pull the permit, and get you on the schedule.
Call Bolt Plumbers in Riverside
Reach us at +16149578979 any day of the week. Most calls placed before noon get a same-day visit, and emergencies get priority dispatch. If you prefer email, send the details to info@boltplumbersinriversideca.com and we will get back to you with a time window. We serve Riverside and the surrounding county.