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Avatar for DAY & NIGHT PLUMBER LLC
DAY & NIGHT PLUMBER LLC
4.8(
93
)
Solar Water Heater System - InstallSolar Water Heater System - Install - For BusinessSolar Water Heater System - Repair+1 more

Serving Rosslyn, VA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"I emailed Day and Night Plumber after my old water heater started shooting water out the front panel and within 10 minutes I got a phone call from them with an appointment for an estimate with Marin. The quote was very reasonable and after I supplied the Hybrid Water Heater, Marin was able to come install it on Sunday. He was extremely knowledgeable, efficient, and hard working. He finished everything, cleaned up the area, hauled away my old water heater, and showed me how everything worked. He even gave me a military discount and 12 month warranty on labor. If you need a plumber for anything, give Day and Night Plumber a call, they will give you top notch service for a reasonable price."
Additional Photos
Additional Photos
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+1

Response time11 hrs
3 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Tesla, Inc
Tesla, Inc
New to Angi
Solar Panel Install

Serving Rosslyn, VA and surrounding areas

Approved (Corporate)

In business since 2015

Free estimates

Warranties offered

Tesla Energy provides an all‑in‑one solar‑plus‑storage solution for your home. Sleek, high‑efficiency solar panels paired with Powerwall help you save on electricity bills and protect your homes from outages. The Tesla app gives you real-time visibility into your energy production, usage and savings—and lets you earn money by supporting the grid through Tesla's Virtual Power Plant. Every system is engineered and installed end‑to‑end by Tesla, delivering a modern aesthetic and the confidence that your home is powered by the most advanced renewable energy ecosystem. With our Price Match Guarantee and exclusive incentives, you can be confident you're getting the best value in home energy.

California Home I
California Home I
California Home I
Texas Home
Texas Home

+3

Avatar for SunPower
SunPower
4.2(
105
)
Solar Panel Install

Serving Rosslyn, VA and surrounding areas

In business since 1985

Free estimates

"I had solar panels installed by SunPower's subcontractor Hooked on Solar in 2020. In 2023 some of the panels were damaged by an electrical outage and surge. It took about 4 months for Hooked on Solar to identify the damaged panels, schedule an appointment to replacement, but finally they fixed the panels."
Coastal SunPower Solar Installation
West Coast SunPower Solar Installation
NorthEastern Solar Installation
Southern Solar Installation
SunVault™ Storage Helps Keep the Lights On

+3

Recommended by84%of homeowners
Nova Solar - 142 Photos - Energy Company -
4.9(
10
)
Solar Panel InstallSolar Panels For Electric System - Repair

Serving Rosslyn, VA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"Nova Solar did a fantastic job from contract signing to installation and follow-up. They were very responsive to questions and answered very promptly. Installation was done in one day and their cleanup was the best of any company I have used the past. In fact, they cleaned up some of the things missed by the roofing company who installed a new roof the day before their installation. If you are thinking of going solar, I highly recommend this company..."
Recommended by100%of homeowners
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Solar Panels questions, answered by experts

It’s possible that installing solar panels can lead to mold on the roof. The panels themselves are not the issue. Problems caused by improper installation—such as roof leaks and mounts that aren’t sealed properly—can cause mold. Another potential cause of mold is debris accumulation under panels, which can trap moisture. If you live somewhere with extreme snow, rain, or hail, your home could be more prone to mold.

Depending on the climate in your area, the best time to install solar panels is either winter or early spring. Summer is a fine time to install panels, too, but it tends to be the busy season, so prices may be higher and companies may have packed schedules. The installation process can take more time than expected between getting permits and finalizing a design, so start as soon as you can.

The best way to save money on solar panels is to take advantage of federal and state solar incentives. For example, the solar investment tax credit (ITC) offered by the federal government can save 30% of your total—if you can take the entire credit, which is based on income taxes owed—or an average of around $9,000. You can check the Database of State Incentives for Renewables and Efficiency (DSIRE) for state and local incentives that could save you even more.

Ideally, you want to place them facing true south. This is different from what a compass shows, which is called the magnetic south. You can find true south by using an online calculator as long as you know the longitude and latitude of your property. Solar panel placement is key to maximizing the energy you generate, so this is an important step.

As long as your solar panels are properly installed without damage to your roof, they will not shorten the roof’s life span. Solar panels can act as a cover or barrier to your roof and help block external elements, such as debris, heat, and UV rays. Reduced exposure to the weather can extend your roof’s life.

The Rosslyn, VA homeowners’ guide to solar panel services

From average costs to expert advice, get all the answers you need to get your job done.