Drain Cleaning & Drain Replacement
in Southern NH
A.J. LeBlanc Heating's licensed plumbers clear clogged sinks, tubs, showers, toilets, and accessible house drains. We also replace old cast-iron and galvanized drain piping across Southern NH. Same-day service is available when scheduling allows. Family-owned since 1928.

Sink, Tub, Shower & Toilet Drain Snaking
A.J. LeBlanc Heating clears clogged fixture and house drains across Southern NH, then traces the cause so the problem is less likely to return. When damaged piping is the issue, our licensed plumbers repair or replace the affected interior drain section, including older cast-iron and galvanized piping.
- Kitchen sink drain snaking
- Bathroom sink, tub, and shower drain snaking
- Toilet auger and clog removal
- Branch drain and fixture-trap clearing
- Same-day service when available for fixture-level calls
- Cast-iron and galvanized interior drain-pipe replacement

Cast Iron & House Drain Replacement
Old cast iron and galvanized drain piping eventually rusts through, scales over, and starts leaking or backing up. A.J. LeBlanc Heating replaces tired drain piping throughout the house with modern PVC, from a single failed section under a sink to a full drain and vent stack repipe. A.J. LeBlanc Heating's licensed plumbers handle the planning, permits, and clean install.
- Cast iron drain pipe replacement
- Galvanized drain pipe replacement
- PVC drain & vent stack installation
- Branch drain and fixture drain replacement
- Whole-house drain & waste repipes
- Permits pulled for work that requires them
Drain Cleaning FAQ
What causes drains to clog?
Kitchen drains typically clog from grease, food particles, and soap buildup. Bathroom drains clog from hair and soap. A.J. LeBlanc Heating snakes and clears individual fixture drains.
Is drain cleaner from the hardware store okay to use?
Chemical drain cleaners can work on minor clogs but are harsh on pipes and rarely solve the underlying problem. For recurring or serious clogs, a professional cleaning by A.J. LeBlanc Heating is more effective and gentler on your plumbing.
What drain problems do you handle?
We clear clogged sinks, tubs, showers, toilets, kitchen drains, laundry drains, and accessible house drains. We also repair and replace damaged interior drain piping, including older cast-iron and galvanized sections. We inspect the affected area first and explain whether cleaning or pipe replacement is the better repair.
Do you replace old cast iron drain pipes?
Yes. A.J. LeBlanc Heating regularly replaces old cast iron and galvanized drain piping with modern PVC throughout Southern NH, including drain stacks, branch drains, fixture drains, and vents. Whether it's a single failed section or a whole-house repipe, A.J. LeBlanc Heating's licensed plumbers handle it.
Why does the same drain keep clogging?
Recurring clogs can come from buildup, a damaged pipe, poor pitch, or aging cast-iron or galvanized drainage. We inspect the affected drain, explain what we find, and recommend cleaning, repair, or replacement based on the condition of the piping.
Do you offer same-day drain cleaning?
Same-day fixture-level drain service may be available when scheduling allows. Call A.J. LeBlanc Heating at 603-623-0412 and we will confirm availability.
Southern NH Communities We Serve
Free estimates and prompt service across Southern New Hampshire. Find your town for local details, or call 603-623-0412.
Services in Southern NH's Largest Cities
Request Drain Cleaning
Slow drain or full backup, call A.J. LeBlanc Heating or fill out the form. Same-day service when available across Southern NH.
Get in Touch
Fill out the form and we'll get back to you. Usually the same business day. For emergencies, call us directly.
Contact Information
Mon-Fri: 8am-4:30pm
Evenings & Weekends: Emergency Service
24/7 Emergency Service
No heat? No hot water? Call 603-623-0412 any time.