At 24/7 Services Inc, we’ve installed thousands of water heaters across Long Island over the past 11 years. Homeowners always ask the same question:
“Should I go tankless or stick with a traditional tank?”
The Quick Answer (for 85% of Long Island Homes)
Traditional 40–50 gallon tank water heaters are still the better choice for most families — unless you have very specific needs (which we’ll cover below).
Side-by-Side Comparison: Real 2025 Numbers from Long Island
| Factor | Traditional Tank | Tankless (On-Demand) | Winner |
|---|---|---|---|
| Upfront Cost (Installed) | $1,200 – $2,800 | $3,800 – $6,500 | Traditional |
| Monthly Energy Bill Savings | Baseline | 22–34% lower | Tankless |
| Lifespan | 10–15 years | 20–30 years | Tankless |
| Hot Water Supply | Runs out after 30–40 gallons | Never runs out | Tankless |
| Space Required | Large tank needed | Wall-mounted, compact | Tankless |
| Best for Large Families (5+ people) | Yes (with proper sizing) | Not ideal (flow rate limits) | Traditional |
When Tankless Water Heaters Actually Make Sense on Long Island
- You have a small household (1–2 people)
- You’re building a new home or doing a full remodel
- You want endless hot water for multiple showers + laundry
- You plan to stay in your home 15+ years
- You have natural gas (not oil or propane — tankless hates oil)
- You want to free up basement or closet space
Top Brands We Install Daily on Long Island
Traditional Tanks: Rheem, Bradford White, A.O. Smith (all made in USA with excellent local parts availability)
Tankless: Rinnai, Navien, Noritz (we’re factory-certified on all three)
Real Customer Example: Bay Shore vs Huntington Installation
Bay Shore (4-person family): Replaced failed 50-gallon tank with new Rheem Performance Platinum → $2,200 total → running perfectly 3 years later.
Huntington (2-person couple, new construction): Installed Rinnai RXP199 tankless → $5,200 total → endless hot water, saved 28% on gas bill.
Need a New Water Heater This Week?
Same-day and next-day installations available across all of Nassau & Suffolk County. Free removal of old tank included.
Call or Text 631-606-3288 NowOur Recommendation for 2025
Unless you have a specific reason above, stick with a high-efficiency traditional tank. You’ll save thousands upfront and still get reliable hot water for 12–15 years.
Ready for an upgrade? We offer free, no-pressure quotes and can usually install within 48 hours — even on weekends.
Call or text 631-606-3288 anytime. We’ve been Long Island’s trusted water heater experts for over a decade.