
Sewer Repair
Cracked clay and cast iron sewer lines, roots and repeat backups under century-old homes.
In a tight basement or condo closet, a wall-mounted tankless heater frees up space and doesn't run out mid-shower. We install, repair and descale them, and tell you honestly if one fits. Our office is on Ravenswood Avenue.

A tankless heater fires only when a hot tap opens. Water passes through a heat exchanger and comes out hot for as long as you need it. Each unit has a flow limit, so it's sized for the most hot water your home uses at once.
The trade-offs:
| Tank | Tankless | |
|---|---|---|
| Space | On the floor | On the wall |
| Hot water | Limited to the tank | Continuous, up to its flow |
| Venting | Often a shared chimney | Its own vent |
| Upkeep | Yearly flush | Yearly descaling |
Possibly, with a few checks.
Gas units usually vent through an outside wall.
Older lines may need to be upsized.
Each unit can have its own wall-mounted heater.
Check with your association about exterior vents.
We check the building first.
Reviewed first.
Busiest moment, not an average.
Approved first.

Replacing two old tanks in a shared basement with two wall-mounted tankless heaters frees up floor space for storage or laundry. Each unit keeps its own hot water. The catch is gas and venting. Two tankless units can draw a lot of gas at once, so we check the meter and piping. Each one also needs its own vent, usually through an outside wall, which takes planning on a tight city lot.
Gas line size and venting are the two big variables, especially in older buildings. Two units for a two-flat double the planning. We check first and quote one flat price.
4.6 stars from 3,546 Google reviews for our Ravenswood office.
"Anthony was our technician to take out our old water heater and install a new one as well as install new inside parts to two of our toilets. He was very professional, courteous, respectful of our home, and very pleasant with whom to deal. We were very happy to have had Anthony as our plumber."
"Once again J Blanton got us scheduled quickly. Their technicians were efficient and left the workspace immaculate."
"Christian and Saul were great - super friendly and efficient with fixing our water heater! Even recommended preventative work which would save us money in the future."
No.
No. It needs its own vent, usually through a side wall.
Yes.
Yes, if the gas supply and venting allow it.
About once a year.
About once a year for most homes.
Yes.
Yes. We descale, clean sensors and replace failed parts.
Sometimes.
Sometimes. Older lines may be too small. We check before quoting.
Often.
Often, if venting can reach an outside wall.
It depends on the unit and installation. You'll approve a flat price first.
It depends on the unit and the gas and venting work. You'll approve a flat-rate price before we start.
Annual Protection Plan
Most plumbing problems start small. The No Drip Club brings a J. Blanton plumber to your home for regular maintenance, so small issues get caught before they turn into big repairs.


Cracked clay and cast iron sewer lines, roots and repeat backups under century-old homes.

Slow, gurgling or backed-up drains in kitchens, bathrooms and basements.

Repair for frozen or burst pipes, from basement water lines to back porch spigots.

Water testing and filtration systems, from under-sink filters to whole-house units.

Repair and replacement for tank and tankless water heaters that leak, make noise or run out of hot water too fast.

Repair and replacement for garbage disposals that jam, leak or just hum.

Burst pipes, sewer backups and no hot water, any time of day or night.
Our Ravenswood office is at 5126 N Ravenswood Ave, and our phone line is open 24/7.
We also serve Lincoln Square, Andersonville, Edgewater, North Center, Uptown, Albany Park, West Ridge and more.