Precision SystemsBuilt to Last.
Long Island's trusted systems design team for HVAC, electrical, and plumbing. Every project engineered and owner-supervised — from the first assessment to the final walkthrough.
10+
Years in Business
$1M
Liability Coverage
5yr
Installation Warranty
2
Counties Served
What We Do
Integrated Home Systems
We don't do quick fixes. We engineer complete systems — HVAC, electrical, and plumbing designed to work together from day one.
HVACHVAC Systems Design
From heat pumps to mini-splits — engineered for Long Island comfort.
- Heat pump installation & oil/gas-to-electric conversions
- Central AC & mini-split systems
- SEER-optimized energy assessments
- Load calculations & duct design
- Emergency HVAC service available
ElectricalElectrical Engineering
Safe, code-compliant electrical systems — panels, wiring & EV charging.
- EV charger installation (all brands)
- Panel upgrades & replacements
- Full-home rewiring & circuits
- Generator hookups & transfer switches
- Code compliance inspections
PlumbingPlumbing Systems
Integrated plumbing that works in harmony with your HVAC and electrical.
- Full-home plumbing installations
- Water heater upgrades & tankless systems
- Pipe replacement & full repiping
- Bathroom & kitchen rough-in
- HVAC-integrated hydronic plumbing
The Process
How We Work
Simple, transparent, and owner-supervised from start to finish.
Free Consultation
We come to your home, assess your current systems, and listen to what you need — no pressure, no sales pitch.
Custom System Design
Our team engineers the right solution for your space, with clear pricing and an honest timeline before we start.
Expert Installation
Owner-supervised from day one to final walkthrough. We document every step and don't leave until it's right.
Our Work
Real Projects. Real Results.
Every job completed by our in-house team across Nassau & Suffolk Counties.
Heat Pump System
Long Island, NY
Panel Upgrade
Long Island, NY
EV Charger Install
Long Island, NY
Outdoor Heat Pump Unit
Long Island, NY
Water Heater Replacement
Long Island, NY
Mini-Split Installation
Long Island, NY
More photos available on request · Every project fully documented
Why Oakland
Quality You Can See. Trust You Can Feel.
For 10+ years, Long Island homeowners have trusted us because we do what we say. No corners cut, no subcontractors, no surprises — just precise, owner-supervised work.
Owner on Every Job
Giordano supervises every installation personally. No hand-offs, no surprises.
No Subcontractors
Our trained in-house crew does 100% of the work. Always.
5 Certifications
EPA · NATE · OSHA · ENERGY STAR · INTERNACHI — fully certified on every trade.
5-Year Warranty
$1M liability + a 5-year installation warranty on every system we install.
Flexible Financing
Don't Let Budget Hold You Back
We offer industry-leading financing through Hearth with up to 17 payment options — including 0% interest plans for qualified homeowners.
0% INTEREST
0
$0
Down Payment
$0
Upfront Cost
0% for 12–21 Mo.
Interest-free plans available — pay over time, no extra cost.
17 Payment Options
Short-term no-interest to 12-year plans at 9–12%.
60-Second Pre-Qualify
Check options online now — soft pull, no credit impact.
Checking won't affect your credit score
Get In Touch
Request Your Free Quote
Tell us about your project and we'll reach out within 24 hours with a transparent estimate. No commitment required.
Call or Text
(516) 460-3313Service Area
Nassau & Suffolk Counties, Long Island, NY