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Depending on the size and number of the windows and work required, cleaning companies can charge $2 to $7 per pane. Likewise, the cost may vary for residential and commercial properties.

Before hiring a window cleaning service, ensure to inquire about their formal training, licenses and also gain reliable information about their services through references.

A replacement window is a window that is installed in an existing window opening as replacement of the existing window. Old weather beaten windows deteriorate and become loose and drafty.

You can get quotes from the window cleaning service's website. If they don't have online presence, then you can call them up, ask for a quote and negotiate prices.

Research online to know the best window cleaning services in your city. Consider factors like price per window, types of services offered and consumer reviews.

1Wood double-hung: Andersen 400 Series, $310 per window.2Vinyl double-hung: Simonton Pro-Finish Contractor, $260.3Fiberglass double-hung: Integrity from Marvin Ultrex, $450.4Wood casement: Andersen 400 Series, $400.