What these parts do
On a propane grill, the regulator screws onto the tank valve and the hose runs from it to the grill's manifold. A full propane tank holds well over 100 psi; the regulator brings that down to a fraction of one psi, measured in inches of water column. Modern tank connections (the large plastic nut style) include an excess flow device that limits gas if the hose is cut, and a thermal shutoff.
Natural gas grills work differently. The house line feeds a flexible connector or hard pipe to the grill, and many grills have their own small regulator at the inlet. Natural gas arrives at low pressure already, so those regulators fail less often, but the flex connectors still age.
Signs it's time to replace them
- Bubbles at the tank connection or along the hose during a soap test.
- Hose rubber that's cracked, stiff, sun-faded, swollen or chewed.
- A regulator that keeps tripping into bypass even when you open the tank slowly with everything off.
- Weak or fluttering flames that a regulator reset doesn't fix.
- A humming or whistling sound from the regulator.
- Rust or corrosion on the regulator body, or a vent hole that's blocked by spiders or dirt.
- A gas smell at the tank or along the hose.
What we usually find
Most common first.
Sun and heat damage
Hoses left in direct sun in LA summers get hard and crack, especially at bends near the connections.
Rodent damage
Rats and mice nest in grill carts and chew hoses. Common in canyon and hillside homes and around ivy.
Learn moreWorn regulator
Internal diaphragms stiffen with age. Output pressure wanders and flames get weak or unsteady.
Learn moreDamaged tank seal
The rubber seal in the tank valve or on the regulator nipple gets nicked, causing a leak at the connection.
Pinched or kinked hose
A hose crushed under the cart, a door or a wheel restricts gas and can split.
What you can safely do
Resetting a propane regulator is fine to do yourself: all knobs off, tank closed, disconnect for a minute, reconnect hand tight, open the tank slowly. A soap test on the tank connection and hose is also safe; our soap test guide explains how.
On a freestanding propane grill, replacing a regulator and hose assembly with the exact matching part is a job many handy owners do. The assembly has to match the grill's connection and the burner output, and the new connections have to be leak tested before use. If anything bubbles, or if you're not certain the part is right, stop.
On natural gas grills and built-ins, leave it to us. Natural gas connections are threaded fittings at the house line, and the work is closer to plumbing than to swapping a tank.
How we replace a regulator or hose
- 1
Shut off and bleed
Supply closed, line bled through the burners, knobs back off.
- 2
Match the part
Regulator output, hose length, end fittings and connection type have to match the grill. Natural gas flex lines must be rated for outdoor gas use and sized for the grill.
- 3
Route it safely
Hoses are routed away from the firebox, grease tray and any sharp edges, with no kinks and no tension at the connections.
- 4
Leak test
Every connection is leak tested under pressure before the grill is lit.
- 5
Check pressure and flame
We light each burner, check flame quality on high and low, and confirm the regulator holds steady when all burners run at once.
Regulator and hose questions
How often should a propane hose be replaced?
There's no fixed schedule, but check it every time you change the tank. Replace it at the first sign of cracking, stiffness, or damage. In full LA sun, hoses age faster.
Can I use any regulator from the hardware store?
Only if it matches your grill's connection and output. A wrong regulator can give too little or too much gas. When in doubt, match the grill's model number.
My regulator frosts up. Is it broken?
Frost on the regulator or tank usually means you're drawing gas faster than the tank can vaporize it, often with a nearly empty tank. If it happens with a full tank, the regulator may be failing or there may be a leak downstream.
Do you work on natural gas connections?
Yes, on the grill side of the shutoff. If there's a problem with the gas line itself or the house side, we'll tell you what we found so a plumber or SoCalGas can handle it.
How much does regulator or hose replacement cost?
It depends on the grill and whether the parts are OEM or universal. Call or text with your model number and we'll quote it.
Related guides
BBQ Grill Repair
On-site repair for gas grills: ignition, burners, valves, regulators, gas leaks and the hardware that wears out, with common parts carried on the truck.
SafetyHow to Do a Gas Leak Soap Test
How to check a propane or natural gas grill for leaks with soapy water, step by step, and what to do if you find bubbles.
Buying advicePropane vs. Natural Gas Grills
How propane and natural gas grills differ in heat, convenience, setup and safety, and when converting a grill from one to the other makes sense.
TroubleshootingMice and Rats in Your Grill
Signs of mice and rats in a grill or outdoor kitchen, how to clean up safely, what they damage, and practical ways to keep them out for good.
SafetyGrill Safety Checklist
A practical safety checklist for gas grills and outdoor kitchens, from placement and gas checks to grease fires and what to do in an emergency.
Hose cracked or regulator acting up?
Shut the tank off, then call or text us. Send a photo of the hose and regulator and we'll bring the right parts.